./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:45:09,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:45:09,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:45:09,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:45:09,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:45:09,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:45:09,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:45:09,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:45:09,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:45:09,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:45:09,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:45:09,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:45:09,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:45:09,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:45:09,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:45:09,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:45:09,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:45:09,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:45:09,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:45:09,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:45:09,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:45:09,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:45:09,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:45:09,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:45:09,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:45:09,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:45:09,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:45:09,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:45:09,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:45:09,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:45:09,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:45:09,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:45:09,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:45:09,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:45:09,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:45:09,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:45:09,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:45:09,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:45:09,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:45:09,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:45:09,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:45:09,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:45:09,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:45:09,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:45:09,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:45:09,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:45:09,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:45:09,854 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:45:09,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:45:09,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:45:09,860 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:45:09,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:45:09,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:45:09,862 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:45:09,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:45:09,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:45:09,863 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:45:09,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:45:09,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:45:09,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:45:09,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:45:09,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:45:09,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:45:09,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:45:09,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:45:09,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:45:09,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:45:09,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:45:09,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:45:09,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:45:09,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:45:09,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:45:09,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:09,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:45:09,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:45:09,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:45:09,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:45:09,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:45:09,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:45:09,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:45:09,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:45:09,872 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_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-03 03:45:10,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:45:10,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:45:10,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:45:10,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:45:10,227 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:45:10,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-03 03:45:10,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/3f26bcd55/9911ebd36457471788fabf6eaf25a6be/FLAGd1b514b4d [2021-11-03 03:45:11,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:45:11,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-03 03:45:11,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/3f26bcd55/9911ebd36457471788fabf6eaf25a6be/FLAGd1b514b4d [2021-11-03 03:45:11,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/3f26bcd55/9911ebd36457471788fabf6eaf25a6be [2021-11-03 03:45:11,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:45:11,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:45:11,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:11,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:45:11,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:45:11,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:11" (1/1) ... [2021-11-03 03:45:11,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ced4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:11, skipping insertion in model container [2021-11-03 03:45:11,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:11" (1/1) ... [2021-11-03 03:45:11,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:45:11,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:11,710 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-03 03:45:11,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:11,769 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:45:11,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@533fe8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:11, skipping insertion in model container [2021-11-03 03:45:11,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:11,770 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:45:11,775 INFO L168 Benchmark]: Toolchain (without parser) took 592.56 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 98.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:45:11,775 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 64.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:45:11,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.87 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.7 MB in the beginning and 98.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:45:11,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 64.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.87 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.7 MB in the beginning and 98.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:45:14,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:45:14,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:45:14,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:45:14,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:45:14,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:45:14,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:45:14,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:45:14,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:45:14,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:45:14,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:45:14,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:45:14,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:45:14,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:45:14,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:45:14,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:45:14,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:45:14,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:45:14,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:45:14,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:45:14,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:45:14,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:45:14,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:45:14,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:45:14,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:45:14,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:45:14,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:45:14,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:45:14,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:45:14,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:45:14,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:45:14,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:45:14,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:45:14,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:45:14,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:45:14,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:45:14,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:45:14,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:45:14,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:45:14,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:45:14,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:45:14,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:45:14,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:45:14,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:45:14,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:45:14,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:45:14,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:45:14,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:45:14,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:45:14,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:45:14,208 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:45:14,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:45:14,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:45:14,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:45:14,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:45:14,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:45:14,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:45:14,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:45:14,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:45:14,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:45:14,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:45:14,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:45:14,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:45:14,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:45:14,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:45:14,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:45:14,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:45:14,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:45:14,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:14,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:45:14,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:45:14,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:45:14,216 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:45:14,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:45:14,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:45:14,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:45:14,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:45:14,218 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_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-03 03:45:14,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:45:14,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:45:14,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:45:14,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:45:14,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:45:14,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-03 03:45:14,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/1a023531b/82ee1d04933e4d08b00c96c76919aa10/FLAG762c94b90 [2021-11-03 03:45:15,481 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:45:15,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-03 03:45:15,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/1a023531b/82ee1d04933e4d08b00c96c76919aa10/FLAG762c94b90 [2021-11-03 03:45:15,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/data/1a023531b/82ee1d04933e4d08b00c96c76919aa10 [2021-11-03 03:45:15,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:45:15,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:45:15,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:15,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:45:15,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:45:15,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:15" (1/1) ... [2021-11-03 03:45:15,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5070f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:15, skipping insertion in model container [2021-11-03 03:45:15,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:15" (1/1) ... [2021-11-03 03:45:15,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:45:15,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:16,335 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-03 03:45:16,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:16,364 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:45:16,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:16,500 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-03 03:45:16,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:16,515 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:45:16,637 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-03 03:45:16,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:16,679 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:45:16,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16 WrapperNode [2021-11-03 03:45:16,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:16,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:16,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:45:16,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:45:16,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:16,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:45:16,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:45:16,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:45:16,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:16,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:45:16,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:45:16,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:45:16,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:45:16,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (1/1) ... [2021-11-03 03:45:17,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:17,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:45:17,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:45:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:45:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:45:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:45:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:45:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:45:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:45:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:45:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:45:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:45:17,351 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 03:45:27,957 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-03 03:45:27,958 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-03 03:45:27,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:45:27,971 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 03:45:27,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:27 BoogieIcfgContainer [2021-11-03 03:45:27,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:45:27,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:45:27,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:45:27,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:45:27,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:15" (1/3) ... [2021-11-03 03:45:27,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425adc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:27, skipping insertion in model container [2021-11-03 03:45:27,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:16" (2/3) ... [2021-11-03 03:45:27,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425adc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:27, skipping insertion in model container [2021-11-03 03:45:27,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:27" (3/3) ... [2021-11-03 03:45:27,983 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2021-11-03 03:45:27,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:45:27,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:45:28,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:45:28,068 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:45:28,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:45:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:45:28,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:28,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:28,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 917223054, now seen corresponding path program 1 times [2021-11-03 03:45:28,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:28,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829508702] [2021-11-03 03:45:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:28,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:28,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:28,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:28,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:45:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:28,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:28,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:28,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:29,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:29,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829508702] [2021-11-03 03:45:29,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829508702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:29,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:29,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:45:29,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924465786] [2021-11-03 03:45:29,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:29,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:29,045 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 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 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:29,235 INFO L93 Difference]: Finished difference Result 554 states and 944 transitions. [2021-11-03 03:45:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:29,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 44 [2021-11-03 03:45:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:29,252 INFO L225 Difference]: With dead ends: 554 [2021-11-03 03:45:29,252 INFO L226 Difference]: Without dead ends: 377 [2021-11-03 03:45:29,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-03 03:45:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-03 03:45:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.5265957446808511) internal successors, (574), 376 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 574 transitions. [2021-11-03 03:45:29,323 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 574 transitions. Word has length 44 [2021-11-03 03:45:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:29,324 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 574 transitions. [2021-11-03 03:45:29,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 574 transitions. [2021-11-03 03:45:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 03:45:29,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:29,331 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:29,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:29,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:29,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2042718613, now seen corresponding path program 1 times [2021-11-03 03:45:29,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:29,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732649101] [2021-11-03 03:45:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:29,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:29,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:29,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:29,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:45:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:29,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:29,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:30,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:30,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:30,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732649101] [2021-11-03 03:45:30,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732649101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:30,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:30,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:45:30,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556748626] [2021-11-03 03:45:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:30,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:30,840 INFO L87 Difference]: Start difference. First operand 377 states and 574 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:31,605 INFO L93 Difference]: Finished difference Result 862 states and 1324 transitions. [2021-11-03 03:45:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:31,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 105 [2021-11-03 03:45:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:31,612 INFO L225 Difference]: With dead ends: 862 [2021-11-03 03:45:31,612 INFO L226 Difference]: Without dead ends: 617 [2021-11-03 03:45:31,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-03 03:45:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-11-03 03:45:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.521103896103896) internal successors, (937), 616 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 937 transitions. [2021-11-03 03:45:31,675 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 937 transitions. Word has length 105 [2021-11-03 03:45:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:31,677 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 937 transitions. [2021-11-03 03:45:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 937 transitions. [2021-11-03 03:45:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-03 03:45:31,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:31,693 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:31,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:31,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:31,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1716174966, now seen corresponding path program 1 times [2021-11-03 03:45:31,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:31,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444833065] [2021-11-03 03:45:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:31,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:31,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:31,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:31,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:45:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:32,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:32,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 03:45:32,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 03:45:33,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:33,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444833065] [2021-11-03 03:45:33,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444833065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:33,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:33,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:45:33,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095361236] [2021-11-03 03:45:33,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:33,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:33,518 INFO L87 Difference]: Start difference. First operand 617 states and 937 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:34,068 INFO L93 Difference]: Finished difference Result 1222 states and 1863 transitions. [2021-11-03 03:45:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:34,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 169 [2021-11-03 03:45:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:34,074 INFO L225 Difference]: With dead ends: 1222 [2021-11-03 03:45:34,075 INFO L226 Difference]: Without dead ends: 737 [2021-11-03 03:45:34,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-03 03:45:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-03 03:45:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.517663043478261) internal successors, (1117), 736 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1117 transitions. [2021-11-03 03:45:34,107 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1117 transitions. Word has length 169 [2021-11-03 03:45:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:34,108 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1117 transitions. [2021-11-03 03:45:34,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1117 transitions. [2021-11-03 03:45:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-03 03:45:34,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:34,113 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:34,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:34,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:34,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 738648727, now seen corresponding path program 1 times [2021-11-03 03:45:34,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:34,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046921472] [2021-11-03 03:45:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:34,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:34,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:34,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:45:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:34,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-03 03:45:35,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-03 03:45:36,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:36,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046921472] [2021-11-03 03:45:36,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046921472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:36,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:36,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:45:36,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904096512] [2021-11-03 03:45:36,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:36,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:36,196 INFO L87 Difference]: Start difference. First operand 737 states and 1117 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:36,624 INFO L93 Difference]: Finished difference Result 1582 states and 2409 transitions. [2021-11-03 03:45:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 210 [2021-11-03 03:45:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:36,631 INFO L225 Difference]: With dead ends: 1582 [2021-11-03 03:45:36,632 INFO L226 Difference]: Without dead ends: 977 [2021-11-03 03:45:36,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-03 03:45:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-03 03:45:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5153688524590163) internal successors, (1479), 976 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1479 transitions. [2021-11-03 03:45:36,672 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1479 transitions. Word has length 210 [2021-11-03 03:45:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:36,673 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1479 transitions. [2021-11-03 03:45:36,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1479 transitions. [2021-11-03 03:45:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-03 03:45:36,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:36,680 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:36,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:36,895 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1549103668, now seen corresponding path program 1 times [2021-11-03 03:45:36,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:36,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124244115] [2021-11-03 03:45:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:36,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:36,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:36,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:36,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:45:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:45:38,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:38,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 03:45:38,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 03:45:38,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:38,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 03:45:38,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:38,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 03:45:38,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-03 03:45:38,882 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-03 03:45:38,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-03 03:45:38,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:38,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 03:45:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-03 03:45:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-03 03:45:39,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 03:45:39,245 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 03:45:39,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 03:45:39,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:39,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 03:45:39,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 03:45:39,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 03:45:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-03 03:45:40,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:41,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 03:45:41,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-03 03:45:41,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 03:45:41,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-03 03:45:41,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-03 03:45:41,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-03 03:45:41,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-03 03:45:41,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:41,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-03 03:45:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-03 03:45:42,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:42,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124244115] [2021-11-03 03:45:42,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124244115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:42,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:42,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:45:42,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082940339] [2021-11-03 03:45:42,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:45:42,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:45:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:45:42,146 INFO L87 Difference]: Start difference. First operand 977 states and 1479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:04,501 INFO L93 Difference]: Finished difference Result 1951 states and 2954 transitions. [2021-11-03 03:46:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:46:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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 292 [2021-11-03 03:46:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:04,509 INFO L225 Difference]: With dead ends: 1951 [2021-11-03 03:46:04,510 INFO L226 Difference]: Without dead ends: 977 [2021-11-03 03:46:04,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:46:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-03 03:46:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-03 03:46:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.514344262295082) internal successors, (1478), 976 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1478 transitions. [2021-11-03 03:46:04,546 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1478 transitions. Word has length 292 [2021-11-03 03:46:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:04,547 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1478 transitions. [2021-11-03 03:46:04,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1478 transitions. [2021-11-03 03:46:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-03 03:46:04,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:04,554 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:46:04,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:04,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:04,776 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:04,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1801868810, now seen corresponding path program 1 times [2021-11-03 03:46:04,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:04,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227386692] [2021-11-03 03:46:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:04,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:04,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:04,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:46:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:06,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:46:06,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:06,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:06,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:07,022 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-03 03:46:07,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-03 03:46:07,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:07,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:07,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:07,426 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 03:46:07,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-03 03:46:10,082 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:46:10,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-03 03:46:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-03 03:46:10,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-03 03:46:11,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:11,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227386692] [2021-11-03 03:46:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227386692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:11,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:11,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 03:46:11,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691141657] [2021-11-03 03:46:11,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:46:11,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:46:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:46:11,281 INFO L87 Difference]: Start difference. First operand 977 states and 1478 transitions. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:52,274 INFO L93 Difference]: Finished difference Result 4405 states and 6696 transitions. [2021-11-03 03:46:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:46:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 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 292 [2021-11-03 03:46:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:52,301 INFO L225 Difference]: With dead ends: 4405 [2021-11-03 03:46:52,301 INFO L226 Difference]: Without dead ends: 3438 [2021-11-03 03:46:52,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 576 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:46:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-11-03 03:46:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 1319. [2021-11-03 03:46:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.5933232169954477) internal successors, (2100), 1318 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2100 transitions. [2021-11-03 03:46:52,412 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2100 transitions. Word has length 292 [2021-11-03 03:46:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:52,412 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2100 transitions. [2021-11-03 03:46:52,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2100 transitions. [2021-11-03 03:46:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-03 03:46:52,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:52,420 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:46:52,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:52,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:52,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1372210504, now seen corresponding path program 1 times [2021-11-03 03:46:52,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:52,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87836718] [2021-11-03 03:46:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:52,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:52,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eeff8f9-66d5-4a19-88b8-c7938d33f34b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:46:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:57,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 03:46:57,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:58,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:58,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:58,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-03 03:46:58,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 131 [2021-11-03 03:46:58,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 107 [2021-11-03 03:46:58,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:46:58,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:00,281 INFO L354 Elim1Store]: treesize reduction 1579, result has 17.5 percent of original size [2021-11-03 03:47:00,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 107 treesize of output 371 [2021-11-03 03:47:23,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:47:23,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:47:23,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:47:23,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:24,850 INFO L354 Elim1Store]: treesize reduction 1322, result has 7.7 percent of original size [2021-11-03 03:47:24,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 391 treesize of output 509 [2021-11-03 03:49:02,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:02,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 109 treesize of output 45 [2021-11-03 03:49:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-03 03:49:05,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:08,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 589 treesize of output 493 [2021-11-03 03:49:08,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 301