./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:32,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:32,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:32,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:32,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:32,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:32,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:32,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:32,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:32,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:32,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:32,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:32,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:32,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:32,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:32,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:32,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:32,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:32,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:32,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:32,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:32,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:32,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:32,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:32,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:32,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:32,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:32,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:32,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:32,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:32,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:32,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:32,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:32,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:32,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:32,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:32,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:32,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:32,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:32,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:32,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:32,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:39:32,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:32,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:32,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:32,998 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:32,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:32,999 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:32,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:39:32,999 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:33,006 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:33,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:39:33,007 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:39:33,007 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:33,008 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:39:33,008 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:39:33,008 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:39:33,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:33,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:33,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:39:33,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:33,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:33,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:33,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:33,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:33,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:33,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:33,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:33,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:33,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:33,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:33,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:33,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:33,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:33,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:33,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:33,016 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:39:33,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:39:33,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:33,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:33,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:33,018 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-07 01:39:33,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:33,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:33,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:33,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:33,320 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:33,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-07 01:39:33,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d469bf060/e7a1c3221dfb4015b7b4431f4192ece2/FLAGfdd060ce4 [2021-11-07 01:39:34,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:34,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-07 01:39:34,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d469bf060/e7a1c3221dfb4015b7b4431f4192ece2/FLAGfdd060ce4 [2021-11-07 01:39:34,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d469bf060/e7a1c3221dfb4015b7b4431f4192ece2 [2021-11-07 01:39:34,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:34,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:34,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:34,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:34,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:34,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:34" (1/1) ... [2021-11-07 01:39:34,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c6af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:34, skipping insertion in model container [2021-11-07 01:39:34,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:34" (1/1) ... [2021-11-07 01:39:34,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:34,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:34,869 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-07 01:39:34,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:34,946 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:39:34,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31ec38fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:34, skipping insertion in model container [2021-11-07 01:39:34,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:34,947 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:39:34,950 INFO L168 Benchmark]: Toolchain (without parser) took 686.10 ms. Allocated memory is still 109.1 MB. Free memory was 69.9 MB in the beginning and 68.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:34,952 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:39:34,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.87 ms. Allocated memory is still 109.1 MB. Free memory was 69.7 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:34,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.87 ms. Allocated memory is still 109.1 MB. Free memory was 69.7 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1155]: 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:37,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:37,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:37,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:37,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:37,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:37,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:37,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:37,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:37,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:37,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:37,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:37,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:37,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:37,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:37,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:37,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:37,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:37,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:37,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:37,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:37,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:37,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:37,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:37,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:37,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:37,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:37,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:37,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:37,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:37,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:37,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:37,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:37,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:37,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:37,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:37,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:37,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:37,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:37,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:37,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:37,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:39:37,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:37,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:37,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:37,458 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:37,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:37,459 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:37,459 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:37,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:37,460 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:37,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:37,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:37,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:37,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:37,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:37,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:37,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:37,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:37,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:39:37,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:39:37,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:37,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:37,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:37,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:37,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:37,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:39:37,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:37,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:37,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:37,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:37,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:37,467 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:39:37,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:37,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:37,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:37,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:37,469 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-07 01:39:37,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:37,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:37,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:37,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:37,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:37,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-07 01:39:37,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d5dc3965b/9f8a3da936454f078c36202976b80e75/FLAG2d63abddf [2021-11-07 01:39:38,258 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.parser.UltimateCdtExternalSettingsProvider.getSettings(UltimateCdtExternalSettingsProvider.java:67) at org.eclipse.cdt.core.settings.model.extension.CExternalSettingProvider.getSettings(CExternalSettingProvider.java:48) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory$CExtensionSettingProviderDescriptor.getContainer(ExtensionContainerFactory.java:110) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory.createContainer(ExtensionContainerFactory.java:186) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$ContainerDescriptor.(CExternalSettingsManager.java:147) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.checkExternalSettingsChange(CExternalSettingsManager.java:683) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.processContainerChange(CExternalSettingsManager.java:501) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$2.run(CExternalSettingsManager.java:615) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$5.run(CProjectDescriptionManager.java:508) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.runAtomic(CProjectDescriptionManager.java:504) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$4.run(CProjectDescriptionManager.java:484) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:39:38,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:38,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-07 01:39:38,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d5dc3965b/9f8a3da936454f078c36202976b80e75/FLAG2d63abddf [2021-11-07 01:39:38,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/data/d5dc3965b/9f8a3da936454f078c36202976b80e75 [2021-11-07 01:39:38,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:38,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:38,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:38,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:38,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:38,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:38" (1/1) ... [2021-11-07 01:39:38,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9bc5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:38, skipping insertion in model container [2021-11-07 01:39:38,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:38" (1/1) ... [2021-11-07 01:39:38,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:38,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:39,602 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-07 01:39:39,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:39,708 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:39:39,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:39,840 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-07 01:39:39,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:39,899 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:40,001 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_39b78261-6a2c-41dc-b51f-fe01529f34b4/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-07 01:39:40,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:40,114 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:40,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40 WrapperNode [2021-11-07 01:39:40,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:40,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:40,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:40,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:40,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:40,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:46,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:46,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:46,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:46,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:46,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:46,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:47,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:47,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:49,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:50,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:50,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:51,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:51,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:51,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:51,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:51,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:51,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:51,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:39:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:39:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:40:57,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:57,511 INFO L299 CfgBuilder]: Removed 39195 assume(true) statements. [2021-11-07 01:40:57,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:57 BoogieIcfgContainer [2021-11-07 01:40:57,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:57,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:57,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:57,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:57,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:39:38" (1/3) ... [2021-11-07 01:40:57,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b699dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:57, skipping insertion in model container [2021-11-07 01:40:57,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40" (2/3) ... [2021-11-07 01:40:57,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b699dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:57, skipping insertion in model container [2021-11-07 01:40:57,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:57" (3/3) ... [2021-11-07 01:40:57,554 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2021-11-07 01:40:57,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:57,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 256 error locations. [2021-11-07 01:40:57,751 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:57,758 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:40:57,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 256 error locations. [2021-11-07 01:40:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 37780 states, 37523 states have (on average 1.5988860165764998) internal successors, (59995), 37779 states have internal predecessors, (59995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:40:58,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:58,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:58,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:40:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -862041203, now seen corresponding path program 1 times [2021-11-07 01:40:58,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:58,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081295137] [2021-11-07 01:40:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:58,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:58,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:58,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:58,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:40:58,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:59,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:59,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:59,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081295137] [2021-11-07 01:40:59,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081295137] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:59,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:59,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:40:59,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322742062] [2021-11-07 01:40:59,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:40:59,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:40:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:59,388 INFO L87 Difference]: Start difference. First operand has 37780 states, 37523 states have (on average 1.5988860165764998) internal successors, (59995), 37779 states have internal predecessors, (59995), 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 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:00,881 INFO L93 Difference]: Finished difference Result 75225 states and 119378 transitions. [2021-11-07 01:41:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:41:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2021-11-07 01:41:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:01,117 INFO L225 Difference]: With dead ends: 75225 [2021-11-07 01:41:01,118 INFO L226 Difference]: Without dead ends: 27168 [2021-11-07 01:41:01,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:41:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27168 states. [2021-11-07 01:41:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27168 to 27168. [2021-11-07 01:41:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27168 states, 26912 states have (on average 1.588139120095125) internal successors, (42740), 27167 states have internal predecessors, (42740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27168 states to 27168 states and 42740 transitions. [2021-11-07 01:41:02,642 INFO L78 Accepts]: Start accepts. Automaton has 27168 states and 42740 transitions. Word has length 56 [2021-11-07 01:41:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:02,643 INFO L470 AbstractCegarLoop]: Abstraction has 27168 states and 42740 transitions. [2021-11-07 01:41:02,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 27168 states and 42740 transitions. [2021-11-07 01:41:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:41:02,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:02,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:02,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:02,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:02,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1864859122, now seen corresponding path program 1 times [2021-11-07 01:41:02,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:02,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64985452] [2021-11-07 01:41:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:02,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:02,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:41:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:03,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:03,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:03,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:03,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:03,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64985452] [2021-11-07 01:41:03,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64985452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:03,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:03,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:41:03,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928859851] [2021-11-07 01:41:03,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:03,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:03,719 INFO L87 Difference]: Start difference. First operand 27168 states and 42740 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:05,022 INFO L93 Difference]: Finished difference Result 54311 states and 85442 transitions. [2021-11-07 01:41:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:41:05,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-07 01:41:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:05,106 INFO L225 Difference]: With dead ends: 54311 [2021-11-07 01:41:05,106 INFO L226 Difference]: Without dead ends: 27168 [2021-11-07 01:41:05,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27168 states. [2021-11-07 01:41:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27168 to 27168. [2021-11-07 01:41:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27168 states, 26912 states have (on average 1.5878790130796672) internal successors, (42733), 27167 states have internal predecessors, (42733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27168 states to 27168 states and 42733 transitions. [2021-11-07 01:41:06,204 INFO L78 Accepts]: Start accepts. Automaton has 27168 states and 42733 transitions. Word has length 57 [2021-11-07 01:41:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:06,206 INFO L470 AbstractCegarLoop]: Abstraction has 27168 states and 42733 transitions. [2021-11-07 01:41:06,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27168 states and 42733 transitions. [2021-11-07 01:41:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:41:06,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:06,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:06,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:06,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:06,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -190157152, now seen corresponding path program 1 times [2021-11-07 01:41:06,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:06,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636167165] [2021-11-07 01:41:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:06,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:06,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:41:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:41:06,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:07,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:07,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636167165] [2021-11-07 01:41:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636167165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:07,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:41:07,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983225182] [2021-11-07 01:41:07,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:41:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:41:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:07,280 INFO L87 Difference]: Start difference. First operand 27168 states and 42733 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:12,601 INFO L93 Difference]: Finished difference Result 108519 states and 170698 transitions. [2021-11-07 01:41:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:41:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 62 [2021-11-07 01:41:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:12,914 INFO L225 Difference]: With dead ends: 108519 [2021-11-07 01:41:12,914 INFO L226 Difference]: Without dead ends: 81396 [2021-11-07 01:41:12,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:41:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81396 states. [2021-11-07 01:41:14,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81396 to 27166. [2021-11-07 01:41:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27166 states, 26910 states have (on average 1.587699739873653) internal successors, (42725), 27165 states have internal predecessors, (42725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 42725 transitions. [2021-11-07 01:41:14,731 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 42725 transitions. Word has length 62 [2021-11-07 01:41:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:14,732 INFO L470 AbstractCegarLoop]: Abstraction has 27166 states and 42725 transitions. [2021-11-07 01:41:14,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 42725 transitions. [2021-11-07 01:41:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:41:14,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:14,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:14,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:14,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:14,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1018782346, now seen corresponding path program 1 times [2021-11-07 01:41:14,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:14,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88577663] [2021-11-07 01:41:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:14,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:14,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:15,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:41:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:15,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:41:15,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:15,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:15,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:15,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88577663] [2021-11-07 01:41:15,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88577663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:15,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:15,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:41:15,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553381693] [2021-11-07 01:41:15,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:41:15,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:41:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:15,847 INFO L87 Difference]: Start difference. First operand 27166 states and 42725 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:17,633 INFO L93 Difference]: Finished difference Result 54287 states and 85386 transitions. [2021-11-07 01:41:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:41:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 63 [2021-11-07 01:41:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:17,712 INFO L225 Difference]: With dead ends: 54287 [2021-11-07 01:41:17,713 INFO L226 Difference]: Without dead ends: 27178 [2021-11-07 01:41:17,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:41:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2021-11-07 01:41:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 27166. [2021-11-07 01:41:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27166 states, 26910 states have (on average 1.5874767744332963) internal successors, (42719), 27165 states have internal predecessors, (42719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 42719 transitions. [2021-11-07 01:41:19,074 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 42719 transitions. Word has length 63 [2021-11-07 01:41:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:19,075 INFO L470 AbstractCegarLoop]: Abstraction has 27166 states and 42719 transitions. [2021-11-07 01:41:19,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 42719 transitions. [2021-11-07 01:41:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:41:19,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:19,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:19,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:19,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:19,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:19,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash 389103163, now seen corresponding path program 1 times [2021-11-07 01:41:19,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:19,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032530589] [2021-11-07 01:41:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:19,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:19,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:19,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:41:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:19,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:19,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:20,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:20,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:20,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032530589] [2021-11-07 01:41:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032530589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:20,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:20,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:20,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820142798] [2021-11-07 01:41:20,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:20,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:20,241 INFO L87 Difference]: Start difference. First operand 27166 states and 42719 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:22,233 INFO L93 Difference]: Finished difference Result 81104 states and 127485 transitions. [2021-11-07 01:41:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 65 [2021-11-07 01:41:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:22,405 INFO L225 Difference]: With dead ends: 81104 [2021-11-07 01:41:22,405 INFO L226 Difference]: Without dead ends: 54271 [2021-11-07 01:41:22,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54271 states. [2021-11-07 01:41:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54271 to 27438. [2021-11-07 01:41:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27438 states, 27182 states have (on average 1.5900595982635568) internal successors, (43221), 27437 states have internal predecessors, (43221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27438 states to 27438 states and 43221 transitions. [2021-11-07 01:41:24,385 INFO L78 Accepts]: Start accepts. Automaton has 27438 states and 43221 transitions. Word has length 65 [2021-11-07 01:41:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:24,386 INFO L470 AbstractCegarLoop]: Abstraction has 27438 states and 43221 transitions. [2021-11-07 01:41:24,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27438 states and 43221 transitions. [2021-11-07 01:41:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:41:24,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:24,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:24,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:24,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:24,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 53067662, now seen corresponding path program 1 times [2021-11-07 01:41:24,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:24,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987043762] [2021-11-07 01:41:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:24,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:24,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:24,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:41:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:25,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:25,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:25,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:25,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:25,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987043762] [2021-11-07 01:41:25,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987043762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:25,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:25,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:41:25,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615869973] [2021-11-07 01:41:25,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:41:25,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:41:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:25,471 INFO L87 Difference]: Start difference. First operand 27438 states and 43221 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:27,630 INFO L93 Difference]: Finished difference Result 81808 states and 128788 transitions. [2021-11-07 01:41:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:41:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-07 01:41:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:27,764 INFO L225 Difference]: With dead ends: 81808 [2021-11-07 01:41:27,765 INFO L226 Difference]: Without dead ends: 54490 [2021-11-07 01:41:27,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54490 states. [2021-11-07 01:41:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54490 to 27657. [2021-11-07 01:41:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27657 states, 27401 states have (on average 1.5920586839896353) internal successors, (43624), 27656 states have internal predecessors, (43624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27657 states to 27657 states and 43624 transitions. [2021-11-07 01:41:29,337 INFO L78 Accepts]: Start accepts. Automaton has 27657 states and 43624 transitions. Word has length 77 [2021-11-07 01:41:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:29,337 INFO L470 AbstractCegarLoop]: Abstraction has 27657 states and 43624 transitions. [2021-11-07 01:41:29,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 27657 states and 43624 transitions. [2021-11-07 01:41:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:41:29,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:29,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:29,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:29,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:29,543 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1962793991, now seen corresponding path program 1 times [2021-11-07 01:41:29,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:29,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407031723] [2021-11-07 01:41:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:29,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:29,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:29,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:41:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:30,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:30,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:30,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:30,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:30,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407031723] [2021-11-07 01:41:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407031723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:30,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:41:30,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564797745] [2021-11-07 01:41:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:41:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:41:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:30,382 INFO L87 Difference]: Start difference. First operand 27657 states and 43624 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:32,898 INFO L93 Difference]: Finished difference Result 82495 states and 130058 transitions. [2021-11-07 01:41:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:41:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-07 01:41:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:33,022 INFO L225 Difference]: With dead ends: 82495 [2021-11-07 01:41:33,022 INFO L226 Difference]: Without dead ends: 54967 [2021-11-07 01:41:33,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54967 states. [2021-11-07 01:41:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54967 to 28134. [2021-11-07 01:41:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28134 states, 27878 states have (on average 1.5963842456417248) internal successors, (44504), 28133 states have internal predecessors, (44504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28134 states to 28134 states and 44504 transitions. [2021-11-07 01:41:34,635 INFO L78 Accepts]: Start accepts. Automaton has 28134 states and 44504 transitions. Word has length 78 [2021-11-07 01:41:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:34,635 INFO L470 AbstractCegarLoop]: Abstraction has 28134 states and 44504 transitions. [2021-11-07 01:41:34,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28134 states and 44504 transitions. [2021-11-07 01:41:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:41:34,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:34,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:34,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:34,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:34,860 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:34,860 INFO L85 PathProgramCache]: Analyzing trace with hash -923125990, now seen corresponding path program 1 times [2021-11-07 01:41:34,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:34,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860326360] [2021-11-07 01:41:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:34,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:34,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:34,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:41:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:35,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:35,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:35,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:35,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:35,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860326360] [2021-11-07 01:41:35,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860326360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:35,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:35,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:41:35,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446601096] [2021-11-07 01:41:35,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:41:35,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:41:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:35,686 INFO L87 Difference]: Start difference. First operand 28134 states and 44504 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:38,324 INFO L93 Difference]: Finished difference Result 83903 states and 132661 transitions. [2021-11-07 01:41:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:41:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-07 01:41:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:38,418 INFO L225 Difference]: With dead ends: 83903 [2021-11-07 01:41:38,418 INFO L226 Difference]: Without dead ends: 55907 [2021-11-07 01:41:38,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:41:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55907 states. [2021-11-07 01:41:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55907 to 29074. [2021-11-07 01:41:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29074 states, 28818 states have (on average 1.6045180095773475) internal successors, (46239), 29073 states have internal predecessors, (46239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29074 states to 29074 states and 46239 transitions. [2021-11-07 01:41:40,249 INFO L78 Accepts]: Start accepts. Automaton has 29074 states and 46239 transitions. Word has length 79 [2021-11-07 01:41:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:40,249 INFO L470 AbstractCegarLoop]: Abstraction has 29074 states and 46239 transitions. [2021-11-07 01:41:40,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29074 states and 46239 transitions. [2021-11-07 01:41:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:41:40,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:40,258 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:40,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:40,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:40,471 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-07 01:41:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1768483589, now seen corresponding path program 1 times [2021-11-07 01:41:40,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:40,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63732029] [2021-11-07 01:41:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:40,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:40,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:40,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b78261-6a2c-41dc-b51f-fe01529f34b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:41:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:40,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:41,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:41,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:41,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63732029] [2021-11-07 01:41:41,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63732029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:41,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:41,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:41,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057486683] [2021-11-07 01:41:41,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:41,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:41,297 INFO L87 Difference]: Start difference. First operand 29074 states and 46239 transitions. 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)