./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --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_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/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_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/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_c484ba86-b013-4d0d-9278-2ee4eae24c90/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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:05,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:05,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:05,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:05,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:05,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:05,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:05,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:05,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:05,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:05,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:05,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:05,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:05,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:05,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:05,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:05,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:05,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:05,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:05,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:05,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:05,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:05,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:05,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:05,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:05,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:05,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:05,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:05,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:05,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:05,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:05,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:05,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:05,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:05,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:05,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:05,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:05,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:05,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:05,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:05,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:05,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:54:05,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:05,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:05,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:05,557 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:05,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:05,558 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:05,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:05,559 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:05,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:05,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:05,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:05,559 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:05,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:05,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:05,560 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:05,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:05,561 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:05,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:05,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:05,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:05,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:05,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:05,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:05,565 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:05,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:05,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:05,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:05,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:05,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:05,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:05,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:05,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:05,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:05,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:05,567 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:05,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:05,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:05,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:05,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:05,568 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-07 00:54:05,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:05,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:05,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:05,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:05,877 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:05,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-07 00:54:05,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/c606af644/7c1c8ac7402c4f259cf7fa17acc2f2a6/FLAG62e8a8039 [2021-11-07 00:54:06,566 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:06,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-07 00:54:06,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/c606af644/7c1c8ac7402c4f259cf7fa17acc2f2a6/FLAG62e8a8039 [2021-11-07 00:54:06,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/c606af644/7c1c8ac7402c4f259cf7fa17acc2f2a6 [2021-11-07 00:54:06,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:06,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:06,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:06,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:06,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:06,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:06" (1/1) ... [2021-11-07 00:54:06,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d68818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:06, skipping insertion in model container [2021-11-07 00:54:06,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:06" (1/1) ... [2021-11-07 00:54:06,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:06,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:07,476 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-07 00:54:07,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:07,840 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 00:54:07,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@368bc73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:07, skipping insertion in model container [2021-11-07 00:54:07,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:07,844 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:54:07,847 INFO L168 Benchmark]: Toolchain (without parser) took 1067.64 ms. Allocated memory is still 119.5 MB. Free memory was 77.7 MB in the beginning and 75.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:07,848 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:07,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1064.96 ms. Allocated memory is still 119.5 MB. Free memory was 77.6 MB in the beginning and 75.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:07,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1064.96 ms. Allocated memory is still 119.5 MB. Free memory was 77.6 MB in the beginning and 75.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/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_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/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_c484ba86-b013-4d0d-9278-2ee4eae24c90/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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:10,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:10,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:10,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:10,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:10,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:10,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:10,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:10,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:10,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:10,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:10,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:10,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:10,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:10,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:10,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:10,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:10,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:10,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:10,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:10,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:10,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:10,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:10,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:10,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:10,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:10,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:10,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:10,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:10,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:10,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:10,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:10,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:10,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:10,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:10,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:10,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:10,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:10,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:10,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:10,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:10,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:54:10,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:10,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:10,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:10,205 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:10,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:10,206 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:10,206 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:10,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:10,207 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:10,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:10,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:10,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:10,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:10,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:10,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:10,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:10,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:10,211 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:54:10,211 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:54:10,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:10,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:10,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:10,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:10,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:10,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:54:10,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:10,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:10,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:10,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:10,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:10,214 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:54:10,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:10,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:10,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:10,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:10,216 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-07 00:54:10,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:10,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:10,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:10,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:10,662 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:10,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-07 00:54:10,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/b5bcc455f/cf6f28c893874f2e9d9b7ab2ae19d0c0/FLAGec0897365 [2021-11-07 00:54:11,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:11,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-07 00:54:11,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/b5bcc455f/cf6f28c893874f2e9d9b7ab2ae19d0c0/FLAGec0897365 [2021-11-07 00:54:11,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/data/b5bcc455f/cf6f28c893874f2e9d9b7ab2ae19d0c0 [2021-11-07 00:54:11,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:11,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:11,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:11,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:11,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:11,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb8d053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11, skipping insertion in model container [2021-11-07 00:54:11,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:11,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:12,470 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-07 00:54:12,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:12,850 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:54:12,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:12,905 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-07 00:54:13,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:13,107 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:13,142 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_c484ba86-b013-4d0d-9278-2ee4eae24c90/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-07 00:54:13,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:13,341 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:13,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13 WrapperNode [2021-11-07 00:54:13,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:13,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:13,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:13,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:13,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:13,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:13,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:13,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:13,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:13,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:13,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:13,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:13,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:13,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:13,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:13,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 00:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:54:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:54:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:28,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:28,247 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2021-11-07 00:54:28,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:28 BoogieIcfgContainer [2021-11-07 00:54:28,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:28,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:28,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:28,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:28,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:11" (1/3) ... [2021-11-07 00:54:28,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4722bcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:28, skipping insertion in model container [2021-11-07 00:54:28,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13" (2/3) ... [2021-11-07 00:54:28,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4722bcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:28, skipping insertion in model container [2021-11-07 00:54:28,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:28" (3/3) ... [2021-11-07 00:54:28,259 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-07 00:54:28,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:28,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 00:54:28,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:28,333 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 00:54:28,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 00:54:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 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 00:54:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:54:28,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:28,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:28,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-07 00:54:28,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:28,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496324802] [2021-11-07 00:54:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:28,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:28,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:28,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:28,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:28,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:54:28,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:28,725 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 00:54:28,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:28,754 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 00:54:28,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:28,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496324802] [2021-11-07 00:54:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496324802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:28,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:28,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:54:28,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758318544] [2021-11-07 00:54:28,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:54:28,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:28,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:54:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:28,781 INFO L87 Difference]: Start difference. First operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 00:54:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:28,925 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2021-11-07 00:54:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:54:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 00:54:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:28,947 INFO L225 Difference]: With dead ends: 996 [2021-11-07 00:54:28,950 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 00:54:28,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 00:54:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 00:54:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-07 00:54:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 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 00:54:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-07 00:54:29,039 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-07 00:54:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:29,039 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-07 00:54:29,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 00:54:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-07 00:54:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:54:29,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:29,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:29,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:29,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:29,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-07 00:54:29,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:29,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126687164] [2021-11-07 00:54:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:29,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:29,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:29,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:54:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:29,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:29,757 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 00:54:29,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:29,950 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 00:54:29,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:29,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126687164] [2021-11-07 00:54:29,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126687164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:29,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:29,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 00:54:29,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257986743] [2021-11-07 00:54:29,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:54:29,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:54:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:29,955 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:54:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:30,184 INFO L93 Difference]: Finished difference Result 756 states and 989 transitions. [2021-11-07 00:54:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:54:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:30,194 INFO L225 Difference]: With dead ends: 756 [2021-11-07 00:54:30,195 INFO L226 Difference]: Without dead ends: 469 [2021-11-07 00:54:30,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-07 00:54:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2021-11-07 00:54:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.334070796460177) internal successors, (603), 467 states have internal predecessors, (603), 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 00:54:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2021-11-07 00:54:30,241 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 44 [2021-11-07 00:54:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:30,242 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2021-11-07 00:54:30,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:54:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2021-11-07 00:54:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:54:30,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:30,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:30,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:30,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1615141200, now seen corresponding path program 1 times [2021-11-07 00:54:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:30,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911363191] [2021-11-07 00:54:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:30,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:30,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:30,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:54:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:30,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:30,945 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 00:54:30,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:31,316 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 00:54:31,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:31,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911363191] [2021-11-07 00:54:31,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911363191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:31,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:31,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 00:54:31,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997490049] [2021-11-07 00:54:31,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:54:31,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:54:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:31,320 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 00:54:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:31,492 INFO L93 Difference]: Finished difference Result 729 states and 939 transitions. [2021-11-07 00:54:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:31,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:54:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:31,495 INFO L225 Difference]: With dead ends: 729 [2021-11-07 00:54:31,495 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 00:54:31,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 00:54:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-11-07 00:54:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 461 states have internal predecessors, (593), 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 00:54:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 593 transitions. [2021-11-07 00:54:31,511 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 593 transitions. Word has length 44 [2021-11-07 00:54:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:31,511 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 593 transitions. [2021-11-07 00:54:31,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 00:54:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 593 transitions. [2021-11-07 00:54:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:54:31,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:31,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:31,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:31,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:31,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1883778186, now seen corresponding path program 1 times [2021-11-07 00:54:31,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:31,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374909101] [2021-11-07 00:54:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:31,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:31,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:31,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:54:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:32,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:32,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:32,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:54:32,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:54:32,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:54:32,311 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 00:54:32,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 00:54:32,396 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 00:54:32,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 00:54:32,531 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 00:54:32,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:32,747 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 00:54:32,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374909101] [2021-11-07 00:54:32,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374909101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:32,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:32,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:32,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121665316] [2021-11-07 00:54:32,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:32,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:32,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:32,750 INFO L87 Difference]: Start difference. First operand 462 states and 593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 00:54:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:43,905 INFO L93 Difference]: Finished difference Result 825 states and 1057 transitions. [2021-11-07 00:54:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:54:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:43,910 INFO L225 Difference]: With dead ends: 825 [2021-11-07 00:54:43,910 INFO L226 Difference]: Without dead ends: 537 [2021-11-07 00:54:43,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-07 00:54:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 464. [2021-11-07 00:54:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 448 states have (on average 1.328125) internal successors, (595), 463 states have internal predecessors, (595), 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 00:54:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 595 transitions. [2021-11-07 00:54:43,930 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 595 transitions. Word has length 44 [2021-11-07 00:54:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:43,930 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 595 transitions. [2021-11-07 00:54:43,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 00:54:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 595 transitions. [2021-11-07 00:54:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 00:54:43,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:43,933 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:43,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 00:54:44,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:44,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1640597416, now seen corresponding path program 1 times [2021-11-07 00:54:44,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:44,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426297888] [2021-11-07 00:54:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:44,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:44,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:44,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:44,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:54:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:44,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:44,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:44,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:45,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:45,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426297888] [2021-11-07 00:54:45,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426297888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:45,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 00:54:45,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688804284] [2021-11-07 00:54:45,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:54:45,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:45,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:54:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:45,210 INFO L87 Difference]: Start difference. First operand 464 states and 595 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 00:54:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:45,365 INFO L93 Difference]: Finished difference Result 1017 states and 1310 transitions. [2021-11-07 00:54:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 97 [2021-11-07 00:54:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:45,370 INFO L225 Difference]: With dead ends: 1017 [2021-11-07 00:54:45,370 INFO L226 Difference]: Without dead ends: 557 [2021-11-07 00:54:45,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-07 00:54:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 467. [2021-11-07 00:54:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 466 states have internal predecessors, (590), 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 00:54:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 590 transitions. [2021-11-07 00:54:45,391 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 590 transitions. Word has length 97 [2021-11-07 00:54:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:45,393 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 590 transitions. [2021-11-07 00:54:45,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 00:54:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 590 transitions. [2021-11-07 00:54:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 00:54:45,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:45,397 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:45,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:45,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:45,611 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -35071002, now seen corresponding path program 1 times [2021-11-07 00:54:45,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:45,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249485694] [2021-11-07 00:54:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:45,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:45,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:45,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:54:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:46,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:46,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:46,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:46,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249485694] [2021-11-07 00:54:46,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249485694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:46,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:46,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-07 00:54:46,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706277291] [2021-11-07 00:54:46,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:46,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:46,998 INFO L87 Difference]: Start difference. First operand 467 states and 590 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 00:54:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:47,138 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-07 00:54:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:47,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 97 [2021-11-07 00:54:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:47,143 INFO L225 Difference]: With dead ends: 1013 [2021-11-07 00:54:47,143 INFO L226 Difference]: Without dead ends: 550 [2021-11-07 00:54:47,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:47,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-07 00:54:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 461. [2021-11-07 00:54:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.303370786516854) internal successors, (580), 460 states have internal predecessors, (580), 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 00:54:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 580 transitions. [2021-11-07 00:54:47,161 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 580 transitions. Word has length 97 [2021-11-07 00:54:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:47,161 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 580 transitions. [2021-11-07 00:54:47,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 00:54:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 580 transitions. [2021-11-07 00:54:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 00:54:47,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:47,163 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:47,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:47,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:47,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-07 00:54:47,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:47,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354640846] [2021-11-07 00:54:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:47,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:47,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:47,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:54:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:47,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:48,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:48,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:48,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354640846] [2021-11-07 00:54:48,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354640846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:48,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:48,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:54:48,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239304411] [2021-11-07 00:54:48,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:48,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:48,969 INFO L87 Difference]: Start difference. First operand 461 states and 580 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 00:54:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:49,467 INFO L93 Difference]: Finished difference Result 1186 states and 1492 transitions. [2021-11-07 00:54:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-07 00:54:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:49,473 INFO L225 Difference]: With dead ends: 1186 [2021-11-07 00:54:49,473 INFO L226 Difference]: Without dead ends: 729 [2021-11-07 00:54:49,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 00:54:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-07 00:54:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 694. [2021-11-07 00:54:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 678 states have (on average 1.3097345132743363) internal successors, (888), 693 states have internal predecessors, (888), 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 00:54:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2021-11-07 00:54:49,501 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 97 [2021-11-07 00:54:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:49,502 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2021-11-07 00:54:49,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 00:54:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2021-11-07 00:54:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 00:54:49,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:49,504 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:49,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:49,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:49,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-07 00:54:49,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:49,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495720999] [2021-11-07 00:54:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:49,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:49,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:49,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:49,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:54:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:50,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:50,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:50,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:50,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495720999] [2021-11-07 00:54:50,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495720999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:50,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:50,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:54:50,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988238912] [2021-11-07 00:54:50,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:50,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:50,846 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 00:54:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:50,977 INFO L93 Difference]: Finished difference Result 1349 states and 1731 transitions. [2021-11-07 00:54:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 104 [2021-11-07 00:54:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:50,983 INFO L225 Difference]: With dead ends: 1349 [2021-11-07 00:54:50,983 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 00:54:50,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 00:54:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 00:54:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-11-07 00:54:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 687 states have (on average 1.3056768558951966) internal successors, (897), 702 states have internal predecessors, (897), 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 00:54:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 897 transitions. [2021-11-07 00:54:51,025 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 897 transitions. Word has length 104 [2021-11-07 00:54:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:51,026 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 897 transitions. [2021-11-07 00:54:51,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 00:54:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 897 transitions. [2021-11-07 00:54:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 00:54:51,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:51,028 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:51,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:51,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:51,241 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 421191101, now seen corresponding path program 1 times [2021-11-07 00:54:51,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:51,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869639646] [2021-11-07 00:54:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:51,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:51,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:51,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:51,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:54:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:51,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:51,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:52,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:52,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:52,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869639646] [2021-11-07 00:54:52,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869639646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:52,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699353871] [2021-11-07 00:54:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,491 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:54:52,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:54:52,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:54:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:53,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:53,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:53,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:53,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699353871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:53,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542265370] [2021-11-07 00:54:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:53,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:53,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:53,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:53,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 00:54:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:54,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:54,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:54:54,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:54:55,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542265370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:55,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:54:55,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 00:54:55,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415536169] [2021-11-07 00:54:55,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:54:55,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:55,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:54:55,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:54:55,136 INFO L87 Difference]: Start difference. First operand 703 states and 897 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 00:54:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:55,832 INFO L93 Difference]: Finished difference Result 1380 states and 1777 transitions. [2021-11-07 00:54:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:54:55,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 107 [2021-11-07 00:54:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:55,839 INFO L225 Difference]: With dead ends: 1380 [2021-11-07 00:54:55,839 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 00:54:55,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 00:54:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 00:54:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.2953586497890295) internal successors, (921), 726 states have internal predecessors, (921), 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 00:54:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 921 transitions. [2021-11-07 00:54:55,888 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 921 transitions. Word has length 107 [2021-11-07 00:54:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:55,889 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 921 transitions. [2021-11-07 00:54:55,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 00:54:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 921 transitions. [2021-11-07 00:54:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 00:54:55,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:55,891 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:55,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:56,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:56,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:56,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:56,510 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:54:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash -872018179, now seen corresponding path program 2 times [2021-11-07 00:54:56,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:56,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977391344] [2021-11-07 00:54:56,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:54:56,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:56,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:56,512 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:56,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:54:57,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:54:57,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:54:57,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:54:57,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:54:57,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:54:58,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:58,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977391344] [2021-11-07 00:54:58,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977391344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:58,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096063663] [2021-11-07 00:54:58,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:54:58,456 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:54:58,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:54:58,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 00:54:59,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:54:59,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:54:59,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:54:59,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:00,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:00,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096063663] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:00,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640987939] [2021-11-07 00:55:00,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:55:00,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:00,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:00,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 00:55:01,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:55:01,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:55:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 00:55:01,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 00:55:02,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640987939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:02,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:55:02,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 00:55:02,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462879595] [2021-11-07 00:55:02,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 00:55:02,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 00:55:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 00:55:02,893 INFO L87 Difference]: Start difference. First operand 727 states and 921 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 00:55:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:11,353 INFO L93 Difference]: Finished difference Result 2128 states and 2738 transitions. [2021-11-07 00:55:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 00:55:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 115 [2021-11-07 00:55:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:11,364 INFO L225 Difference]: With dead ends: 2128 [2021-11-07 00:55:11,365 INFO L226 Difference]: Without dead ends: 1455 [2021-11-07 00:55:11,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 00:55:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-07 00:55:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 793. [2021-11-07 00:55:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.274131274131274) internal successors, (990), 792 states have internal predecessors, (990), 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 00:55:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 990 transitions. [2021-11-07 00:55:11,448 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 990 transitions. Word has length 115 [2021-11-07 00:55:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:11,448 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 990 transitions. [2021-11-07 00:55:11,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 00:55:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 990 transitions. [2021-11-07 00:55:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 00:55:11,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:11,451 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:11,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:11,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:12,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:12,058 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:55:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -837922435, now seen corresponding path program 3 times [2021-11-07 00:55:12,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:12,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70841475] [2021-11-07 00:55:12,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:55:12,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:12,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:12,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c484ba86-b013-4d0d-9278-2ee4eae24c90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 00:55:14,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 00:55:14,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:14,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:55:14,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:14,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:14,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:14,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:14,164 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 00:55:14,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 00:55:14,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 00:55:14,388 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 00:55:14,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15