./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/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_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:37:04,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:37:04,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:37:04,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:37:04,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:37:04,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:37:04,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:37:04,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:37:04,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:37:04,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:37:04,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:37:04,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:37:04,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:37:04,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:37:04,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:37:04,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:37:04,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:37:04,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:37:04,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:37:04,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:37:04,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:37:04,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:37:05,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:37:05,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:37:05,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:37:05,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:37:05,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:37:05,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:37:05,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:37:05,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:37:05,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:37:05,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:37:05,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:37:05,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:37:05,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:37:05,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:37:05,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:37:05,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:37:05,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:37:05,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:37:05,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:37:05,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:37:05,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:37:05,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:37:05,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:37:05,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:37:05,081 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:37:05,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:37:05,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:37:05,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:37:05,082 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:37:05,082 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:37:05,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:37:05,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:37:05,091 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:37:05,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:37:05,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:37:05,092 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:37:05,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:37:05,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:37:05,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:37:05,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:37:05,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:37:05,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:37:05,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:37:05,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:37:05,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:37:05,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:37:05,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:37:05,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:37:05,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:37:05,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:37:05,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:37:05,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:05,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:37:05,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:37:05,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:37:05,099 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:37:05,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:37:05,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:37:05,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:37:05,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:37:05,101 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_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-19 14:37:05,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:37:05,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:37:05,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:37:05,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:37:05,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:37:05,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-19 14:37:05,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/09ef759a1/5dd3a366b23f422cb3dc6861511e2b5d/FLAGa20a3a74a [2021-11-19 14:37:06,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:37:06,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-19 14:37:06,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/09ef759a1/5dd3a366b23f422cb3dc6861511e2b5d/FLAGa20a3a74a [2021-11-19 14:37:06,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/09ef759a1/5dd3a366b23f422cb3dc6861511e2b5d [2021-11-19 14:37:06,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:37:06,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:37:06,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:06,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:37:06,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:37:06,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:06" (1/1) ... [2021-11-19 14:37:06,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9673368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:06, skipping insertion in model container [2021-11-19 14:37:06,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:06" (1/1) ... [2021-11-19 14:37:06,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:37:06,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:37:07,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-19 14:37:07,193 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:07,218 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:37:07,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7df2a244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:07, skipping insertion in model container [2021-11-19 14:37:07,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:07,220 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:37:07,224 INFO L158 Benchmark]: Toolchain (without parser) took 808.42ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 59.1MB in the end (delta: -8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:37:07,225 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:37:07,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.11ms. Allocated memory is still 92.3MB. Free memory was 71.0MB in the beginning and 59.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:37:07,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.11ms. Allocated memory is still 92.3MB. Free memory was 71.0MB in the beginning and 59.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/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_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:37:09,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:37:09,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:37:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:37:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:37:10,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:37:10,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:37:10,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:37:10,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:37:10,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:37:10,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:37:10,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:37:10,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:37:10,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:37:10,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:37:10,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:37:10,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:37:10,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:37:10,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:37:10,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:37:10,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:37:10,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:37:10,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:37:10,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:37:10,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:37:10,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:37:10,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:37:10,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:37:10,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:37:10,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:37:10,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:37:10,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:37:10,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:37:10,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:37:10,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:37:10,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:37:10,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:37:10,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:37:10,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:37:10,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:37:10,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:37:10,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:37:10,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:37:10,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:37:10,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:37:10,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:37:10,219 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:37:10,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:37:10,219 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:37:10,220 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:37:10,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:37:10,220 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:37:10,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:37:10,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:37:10,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:37:10,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:37:10,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:37:10,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:37:10,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:37:10,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:37:10,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:37:10,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:37:10,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:37:10,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:37:10,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:37:10,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:37:10,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:37:10,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:37:10,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:37:10,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:10,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:37:10,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:37:10,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:37:10,230 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:37:10,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:10,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:37:10,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:37:10,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:37:10,232 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_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-19 14:37:10,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:37:10,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:37:10,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:37:10,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:37:10,752 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:37:10,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-19 14:37:10,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/024e4c02b/9177cc5739134ccd875c018bb8641d63/FLAG3bb88c2fe [2021-11-19 14:37:11,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:37:11,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-19 14:37:11,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/024e4c02b/9177cc5739134ccd875c018bb8641d63/FLAG3bb88c2fe [2021-11-19 14:37:11,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/data/024e4c02b/9177cc5739134ccd875c018bb8641d63 [2021-11-19 14:37:11,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:37:11,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:37:11,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:11,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:37:11,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:37:11,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:11" (1/1) ... [2021-11-19 14:37:11,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bccdea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:11, skipping insertion in model container [2021-11-19 14:37:11,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:11" (1/1) ... [2021-11-19 14:37:11,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:37:11,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:37:12,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-19 14:37:12,535 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:12,558 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:37:12,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:37:12,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-19 14:37:12,716 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:12,732 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:37:12,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-19 14:37:12,873 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:12,897 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:37:12,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12 WrapperNode [2021-11-19 14:37:12,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:12,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:12,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:37:12,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:37:12,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:12,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,053 INFO L137 Inliner]: procedures = 36, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 773 [2021-11-19 14:37:13,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:13,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:37:13,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:37:13,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:37:13,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:37:13,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:37:13,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:37:13,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:37:13,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (1/1) ... [2021-11-19 14:37:13,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:37:13,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:37:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:37:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:37:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:37:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:37:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:37:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:37:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:37:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:37:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:37:13,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:37:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:37:13,557 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:37:13,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:37:13,595 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:37:23,255 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-19 14:37:23,255 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-19 14:37:23,255 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:37:23,266 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:37:23,266 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:37:23,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:23 BoogieIcfgContainer [2021-11-19 14:37:23,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:37:23,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:37:23,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:37:23,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:37:23,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:37:11" (1/3) ... [2021-11-19 14:37:23,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:23, skipping insertion in model container [2021-11-19 14:37:23,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:12" (2/3) ... [2021-11-19 14:37:23,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:23, skipping insertion in model container [2021-11-19 14:37:23,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:23" (3/3) ... [2021-11-19 14:37:23,279 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2021-11-19 14:37:23,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:37:23,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:37:23,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:37:23,357 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:37:23,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:37:23,381 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) [2021-11-19 14:37:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 14:37:23,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:23,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:23,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1590777164, now seen corresponding path program 1 times [2021-11-19 14:37:23,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:23,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225711260] [2021-11-19 14:37:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:23,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:23,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:23,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:37:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:23,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:23,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:37:24,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:37:24,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225711260] [2021-11-19 14:37:24,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225711260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:24,386 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:24,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:24,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243895547] [2021-11-19 14:37:24,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:24,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:24,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:24,449 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) [2021-11-19 14:37:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:24,828 INFO L93 Difference]: Finished difference Result 586 states and 1008 transitions. [2021-11-19 14:37:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:24,831 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 [2021-11-19 14:37:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:24,862 INFO L225 Difference]: With dead ends: 586 [2021-11-19 14:37:24,862 INFO L226 Difference]: Without dead ends: 401 [2021-11-19 14:37:24,868 INFO L932 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 [2021-11-19 14:37:24,876 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 595 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:24,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 662 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:37:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-19 14:37:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-19 14:37:25,000 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) [2021-11-19 14:37:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 614 transitions. [2021-11-19 14:37:25,004 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 614 transitions. Word has length 45 [2021-11-19 14:37:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:25,006 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 614 transitions. [2021-11-19 14:37:25,006 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) [2021-11-19 14:37:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 614 transitions. [2021-11-19 14:37:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:37:25,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:25,023 INFO L514 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] [2021-11-19 14:37:25,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:25,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:25,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1658829835, now seen corresponding path program 1 times [2021-11-19 14:37:25,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:25,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580459942] [2021-11-19 14:37:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:25,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:25,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:25,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:25,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:37:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:25,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:25,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:37:26,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:37:26,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:26,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580459942] [2021-11-19 14:37:26,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580459942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:26,457 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:26,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:26,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203960562] [2021-11-19 14:37:26,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:26,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:26,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:26,467 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) [2021-11-19 14:37:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:27,232 INFO L93 Difference]: Finished difference Result 918 states and 1428 transitions. [2021-11-19 14:37:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:27,233 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 [2021-11-19 14:37:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:27,239 INFO L225 Difference]: With dead ends: 918 [2021-11-19 14:37:27,240 INFO L226 Difference]: Without dead ends: 657 [2021-11-19 14:37:27,242 INFO L932 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 [2021-11-19 14:37:27,243 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 307 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:27,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 721 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:37:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-19 14:37:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-11-19 14:37:27,275 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) [2021-11-19 14:37:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1001 transitions. [2021-11-19 14:37:27,279 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1001 transitions. Word has length 106 [2021-11-19 14:37:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:27,280 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1001 transitions. [2021-11-19 14:37:27,281 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) [2021-11-19 14:37:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1001 transitions. [2021-11-19 14:37:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 14:37:27,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:27,285 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:27,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:27,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:27,502 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 469411572, now seen corresponding path program 1 times [2021-11-19 14:37:27,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:27,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32781590] [2021-11-19 14:37:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:27,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:27,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:27,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:37:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:37:28,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:37:29,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:29,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32781590] [2021-11-19 14:37:29,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32781590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:29,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:29,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:29,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106573432] [2021-11-19 14:37:29,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:29,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:29,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:29,072 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) [2021-11-19 14:37:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:30,054 INFO L93 Difference]: Finished difference Result 1433 states and 2205 transitions. [2021-11-19 14:37:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:30,055 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 [2021-11-19 14:37:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:30,062 INFO L225 Difference]: With dead ends: 1433 [2021-11-19 14:37:30,063 INFO L226 Difference]: Without dead ends: 916 [2021-11-19 14:37:30,064 INFO L932 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 [2021-11-19 14:37:30,065 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 307 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:30,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 727 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:37:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-19 14:37:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2021-11-19 14:37:30,103 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) [2021-11-19 14:37:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1391 transitions. [2021-11-19 14:37:30,108 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1391 transitions. Word has length 170 [2021-11-19 14:37:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:30,109 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1391 transitions. [2021-11-19 14:37:30,109 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) [2021-11-19 14:37:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1391 transitions. [2021-11-19 14:37:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:37:30,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:30,115 INFO L514 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] [2021-11-19 14:37:30,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:30,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:30,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1159815289, now seen corresponding path program 1 times [2021-11-19 14:37:30,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:30,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414247990] [2021-11-19 14:37:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:30,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:30,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:30,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:37:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:30,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:30,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:37:31,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:37:32,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:32,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414247990] [2021-11-19 14:37:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414247990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:32,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:32,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:32,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209238493] [2021-11-19 14:37:32,315 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:32,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:32,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:32,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:32,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:32,318 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) [2021-11-19 14:37:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:32,906 INFO L93 Difference]: Finished difference Result 1949 states and 2980 transitions. [2021-11-19 14:37:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:32,907 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 [2021-11-19 14:37:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:32,920 INFO L225 Difference]: With dead ends: 1949 [2021-11-19 14:37:32,921 INFO L226 Difference]: Without dead ends: 1173 [2021-11-19 14:37:32,922 INFO L932 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 [2021-11-19 14:37:32,924 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 315 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:32,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 725 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:37:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-19 14:37:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-19 14:37:32,991 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) [2021-11-19 14:37:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1776 transitions. [2021-11-19 14:37:32,997 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1776 transitions. Word has length 234 [2021-11-19 14:37:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:32,998 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1776 transitions. [2021-11-19 14:37:32,999 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) [2021-11-19 14:37:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1776 transitions. [2021-11-19 14:37:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-19 14:37:33,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:33,007 INFO L514 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] [2021-11-19 14:37:33,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:33,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2069103727, now seen corresponding path program 1 times [2021-11-19 14:37:33,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:33,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283502884] [2021-11-19 14:37:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:33,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:33,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:33,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:33,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:37:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:33,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:33,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-19 14:37:34,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-19 14:37:35,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:35,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283502884] [2021-11-19 14:37:35,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283502884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:35,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:35,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:35,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715074492] [2021-11-19 14:37:35,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:35,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:35,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:35,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:35,583 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) [2021-11-19 14:37:36,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:36,612 INFO L93 Difference]: Finished difference Result 2463 states and 3748 transitions. [2021-11-19 14:37:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:36,612 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 [2021-11-19 14:37:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:36,625 INFO L225 Difference]: With dead ends: 2463 [2021-11-19 14:37:36,625 INFO L226 Difference]: Without dead ends: 1430 [2021-11-19 14:37:36,627 INFO L932 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 [2021-11-19 14:37:36,629 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 309 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:36,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 725 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:37:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-19 14:37:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-11-19 14:37:36,688 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) [2021-11-19 14:37:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2159 transitions. [2021-11-19 14:37:36,695 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2159 transitions. Word has length 306 [2021-11-19 14:37:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:36,696 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 2159 transitions. [2021-11-19 14:37:36,696 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) [2021-11-19 14:37:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2159 transitions. [2021-11-19 14:37:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-19 14:37:36,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:36,707 INFO L514 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] [2021-11-19 14:37:36,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:36,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:36,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2124887066, now seen corresponding path program 1 times [2021-11-19 14:37:36,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:36,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488215206] [2021-11-19 14:37:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:36,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:36,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:36,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:37:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:37,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:37,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-19 14:37:38,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-19 14:37:39,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:39,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488215206] [2021-11-19 14:37:39,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488215206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:39,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:39,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:39,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024210455] [2021-11-19 14:37:39,516 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:39,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:39,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:39,518 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) [2021-11-19 14:37:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:40,226 INFO L93 Difference]: Finished difference Result 2975 states and 4509 transitions. [2021-11-19 14:37:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:40,227 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 [2021-11-19 14:37:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:40,239 INFO L225 Difference]: With dead ends: 2975 [2021-11-19 14:37:40,240 INFO L226 Difference]: Without dead ends: 1685 [2021-11-19 14:37:40,242 INFO L932 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 [2021-11-19 14:37:40,243 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 309 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:40,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 728 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:37:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-19 14:37:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1685. [2021-11-19 14:37:40,335 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) [2021-11-19 14:37:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2538 transitions. [2021-11-19 14:37:40,344 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2538 transitions. Word has length 378 [2021-11-19 14:37:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:40,344 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2538 transitions. [2021-11-19 14:37:40,345 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) [2021-11-19 14:37:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2538 transitions. [2021-11-19 14:37:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-19 14:37:40,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:40,359 INFO L514 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] [2021-11-19 14:37:40,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:40,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:40,584 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 906547015, now seen corresponding path program 1 times [2021-11-19 14:37:40,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:40,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457250238] [2021-11-19 14:37:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:40,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:40,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:40,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:40,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:37:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:41,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:41,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-19 14:37:42,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-19 14:37:43,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457250238] [2021-11-19 14:37:43,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457250238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:43,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857809790] [2021-11-19 14:37:43,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:43,500 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) [2021-11-19 14:37:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:44,043 INFO L93 Difference]: Finished difference Result 3486 states and 5267 transitions. [2021-11-19 14:37:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:44,044 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 [2021-11-19 14:37:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:44,058 INFO L225 Difference]: With dead ends: 3486 [2021-11-19 14:37:44,058 INFO L226 Difference]: Without dead ends: 1941 [2021-11-19 14:37:44,064 INFO L932 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 [2021-11-19 14:37:44,065 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 317 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:44,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:37:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-11-19 14:37:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1941. [2021-11-19 14:37:44,169 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) [2021-11-19 14:37:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2916 transitions. [2021-11-19 14:37:44,177 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2916 transitions. Word has length 449 [2021-11-19 14:37:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:44,178 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 2916 transitions. [2021-11-19 14:37:44,180 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) [2021-11-19 14:37:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2916 transitions. [2021-11-19 14:37:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-19 14:37:44,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:44,198 INFO L514 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] [2021-11-19 14:37:44,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:37:44,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:44,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1828760135, now seen corresponding path program 1 times [2021-11-19 14:37:44,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:44,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169068076] [2021-11-19 14:37:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:44,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:44,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:44,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:37:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:45,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:37:45,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-19 14:37:46,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-19 14:37:47,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:47,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169068076] [2021-11-19 14:37:47,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169068076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:47,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:47,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:37:47,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114913497] [2021-11-19 14:37:47,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:47,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:37:47,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:37:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:37:47,524 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) [2021-11-19 14:37:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:48,449 INFO L93 Difference]: Finished difference Result 4002 states and 6026 transitions. [2021-11-19 14:37:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:37:48,450 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 [2021-11-19 14:37:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:48,471 INFO L225 Difference]: With dead ends: 4002 [2021-11-19 14:37:48,471 INFO L226 Difference]: Without dead ends: 2201 [2021-11-19 14:37:48,474 INFO L932 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 [2021-11-19 14:37:48,476 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 323 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:48,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 732 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:37:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-19 14:37:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-19 14:37:48,609 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) [2021-11-19 14:37:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3297 transitions. [2021-11-19 14:37:48,622 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3297 transitions. Word has length 486 [2021-11-19 14:37:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:48,623 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3297 transitions. [2021-11-19 14:37:48,623 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) [2021-11-19 14:37:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3297 transitions. [2021-11-19 14:37:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-19 14:37:48,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:48,639 INFO L514 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] [2021-11-19 14:37:48,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:37:48,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:48,841 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash 246609113, now seen corresponding path program 1 times [2021-11-19 14:37:48,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:48,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809369254] [2021-11-19 14:37:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:48,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:48,850 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:48,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:38:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:41,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:38:41,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:41,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:41,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:41,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:41,927 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 14:38:41,928 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 [2021-11-19 14:38:42,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:42,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:42,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:42,430 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 14:38:42,430 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 [2021-11-19 14:38:45,096 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:38:45,097 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 [2021-11-19 14:38:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-19 14:38:45,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-19 14:38:46,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:46,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809369254] [2021-11-19 14:38:46,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809369254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:46,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:46,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 14:38:46,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610291918] [2021-11-19 14:38:46,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:46,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:38:46,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:38:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:38:46,935 INFO L87 Difference]: Start difference. First operand 2201 states and 3297 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) [2021-11-19 14:38:48,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:38:50,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:03,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:05,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:06,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:14,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:16,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:22,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:31,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:32,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:38,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:39:44,399 INFO L93 Difference]: Finished difference Result 9840 states and 14794 transitions. [2021-11-19 14:39:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:39:44,402 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 [2021-11-19 14:39:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:39:44,449 INFO L225 Difference]: With dead ends: 9840 [2021-11-19 14:39:44,449 INFO L226 Difference]: Without dead ends: 7649 [2021-11-19 14:39:44,454 INFO L932 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 [2021-11-19 14:39:44,457 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 373 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 85 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:39:44,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1071 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 921 Invalid, 3 Unknown, 0 Unchecked, 57.1s Time] [2021-11-19 14:39:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2021-11-19 14:39:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 2928. [2021-11-19 14:39:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.578066279467031) internal successors, (4619), 2927 states have internal predecessors, (4619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:39:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4619 transitions. [2021-11-19 14:39:44,719 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4619 transitions. Word has length 519 [2021-11-19 14:39:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:39:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4619 transitions. [2021-11-19 14:39:44,720 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) [2021-11-19 14:39:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4619 transitions. [2021-11-19 14:39:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-19 14:39:44,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:39:44,730 INFO L514 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] [2021-11-19 14:39:44,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:39:44,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:39:44,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:39:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:39:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 496064221, now seen corresponding path program 1 times [2021-11-19 14:39:44,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:39:44,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885911518] [2021-11-19 14:39:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:44,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:39:44,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:39:44,956 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:39:44,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:39:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:51,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:39:51,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:51,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:39:51,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:39:51,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:51,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:39:51,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:51,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 14:39:51,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-19 14:39:51,827 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-19 14:39:51,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 1289 treesize of output 1241 [2021-11-19 14:39:51,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:51,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:39:51,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:51,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 14:39:51,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-19 14:39:51,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-19 14:39:52,230 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 14:39:52,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 14:39:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:52,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 14:39:52,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-19 14:39:52,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-19 14:39:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-19 14:39:53,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:54,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:54,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 14:39:54,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:54,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-19 14:39:55,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-19 14:39:55,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-19 14:39:55,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-19 14:39:55,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-19 14:39:55,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-19 14:39:55,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:55,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-19 14:39:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-19 14:39:55,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:39:55,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885911518] [2021-11-19 14:39:55,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885911518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:39:55,659 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:39:55,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:39:55,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359846417] [2021-11-19 14:39:55,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:39:55,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:39:55,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:39:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:39:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:39:55,662 INFO L87 Difference]: Start difference. First operand 2928 states and 4619 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) [2021-11-19 14:39:57,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:59,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:03,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:09,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:40:09,745 INFO L93 Difference]: Finished difference Result 5853 states and 9234 transitions. [2021-11-19 14:40:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:40:09,747 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 [2021-11-19 14:40:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:40:09,764 INFO L225 Difference]: With dead ends: 5853 [2021-11-19 14:40:09,764 INFO L226 Difference]: Without dead ends: 2928 [2021-11-19 14:40:09,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1029 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:40:09,768 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 12 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:40:09,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 882 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 59 Unchecked, 13.9s Time] [2021-11-19 14:40:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-11-19 14:40:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2928. [2021-11-19 14:40:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.5777246327297574) internal successors, (4618), 2927 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:40:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4618 transitions. [2021-11-19 14:40:09,968 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4618 transitions. Word has length 519 [2021-11-19 14:40:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:40:09,968 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4618 transitions. [2021-11-19 14:40:09,968 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) [2021-11-19 14:40:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4618 transitions. [2021-11-19 14:40:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-19 14:40:09,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:40:09,978 INFO L514 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] [2021-11-19 14:40:10,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:40:10,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:40:10,199 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:40:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:40:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1767969, now seen corresponding path program 1 times [2021-11-19 14:40:10,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:40:10,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156442242] [2021-11-19 14:40:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:40:10,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:40:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:40:10,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:40:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:43:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:27,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:43:27,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:27,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:43:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:43:27,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:43:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:43:27,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:43:27,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:43:27,814 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-19 14:43:27,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-19 14:43:27,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:43:27,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:43:27,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:43:28,200 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 14:43:28,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-19 14:43:29,538 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:43:29,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-19 14:43:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-19 14:43:30,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-19 14:43:31,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:31,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156442242] [2021-11-19 14:43:31,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156442242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:43:31,878 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:43:31,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 14:43:31,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630563522] [2021-11-19 14:43:31,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:31,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:43:31,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:43:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:43:31,881 INFO L87 Difference]: Start difference. First operand 2928 states and 4618 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) [2021-11-19 14:43:33,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:35,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:38,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:44,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:48,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:52,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:58,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:02,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:04,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:05,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:07,462 INFO L93 Difference]: Finished difference Result 9701 states and 15039 transitions. [2021-11-19 14:44:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:44:07,464 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 [2021-11-19 14:44:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:07,501 INFO L225 Difference]: With dead ends: 9701 [2021-11-19 14:44:07,501 INFO L226 Difference]: Without dead ends: 6783 [2021-11-19 14:44:07,506 INFO L932 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 [2021-11-19 14:44:07,507 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 406 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 86 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:07,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 666 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 553 Invalid, 3 Unknown, 0 Unchecked, 35.2s Time] [2021-11-19 14:44:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2021-11-19 14:44:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 3720. [2021-11-19 14:44:07,812 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) [2021-11-19 14:44:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6003 transitions. [2021-11-19 14:44:07,825 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6003 transitions. Word has length 519 [2021-11-19 14:44:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:07,825 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6003 transitions. [2021-11-19 14:44:07,825 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) [2021-11-19 14:44:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6003 transitions. [2021-11-19 14:44:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-19 14:44:07,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:07,837 INFO L514 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] [2021-11-19 14:44:07,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:08,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:08,051 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1068795037, now seen corresponding path program 1 times [2021-11-19 14:44:08,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:08,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040140811] [2021-11-19 14:44:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:08,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:08,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:08,056 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:08,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b1d3110-e229-42a0-a384-182dc0caefb8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:49:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-19 14:49:57,526 INFO L286 TraceCheckSpWp]: Computing forward predicates...