./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs --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 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ......................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs --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 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:12:04,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:12:04,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:12:04,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:12:04,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:12:04,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:12:04,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:12:04,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:12:04,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:12:04,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:12:04,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:12:04,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:12:04,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:12:04,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:12:04,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:12:04,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:12:04,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:12:04,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:12:04,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:12:04,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:12:04,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:12:04,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:12:04,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:12:04,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:12:04,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:12:04,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:12:04,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:12:04,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:12:04,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:12:04,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:12:04,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:12:04,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:12:04,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:12:04,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:12:04,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:12:04,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:12:04,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:12:04,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:12:04,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:12:04,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:12:04,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:12:04,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-10-16 02:12:04,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:12:04,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:12:04,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:12:04,783 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:12:04,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:12:04,784 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:12:04,784 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:12:04,784 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:12:04,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:12:04,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:12:04,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:12:04,792 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:12:04,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:12:04,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:12:04,793 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:12:04,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:12:04,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:12:04,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:12:04,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:12:04,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:12:04,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:12:04,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:12:04,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:12:04,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:12:04,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:12:04,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:12:04,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:12:04,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:12:04,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:12:04,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:12:04,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:12:04,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:12:04,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:12:04,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:12:04,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:12:04,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:12:04,800 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_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-16 02:12:05,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:12:05,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:12:05,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:12:05,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:12:05,181 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:12:05,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-16 02:12:05,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/6ca229a3e/b01565f1d5814b6f936fab78e5e6c89d/FLAGbcbd54a7a [2021-10-16 02:12:05,919 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:12:05,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-16 02:12:05,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/6ca229a3e/b01565f1d5814b6f936fab78e5e6c89d/FLAGbcbd54a7a [2021-10-16 02:12:06,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/6ca229a3e/b01565f1d5814b6f936fab78e5e6c89d [2021-10-16 02:12:06,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:12:06,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:12:06,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:06,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:12:06,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:12:06,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:06" (1/1) ... [2021-10-16 02:12:06,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c783e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:06, skipping insertion in model container [2021-10-16 02:12:06,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:06" (1/1) ... [2021-10-16 02:12:06,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:12:06,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:12:06,913 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_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-16 02:12:06,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:07,000 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) [2021-10-16 02:12:07,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7787e889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:07, skipping insertion in model container [2021-10-16 02:12:07,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:07,001 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:12:07,003 INFO L168 Benchmark]: Toolchain (without parser) took 834.35 ms. Allocated memory is still 111.1 MB. Free memory was 69.0 MB in the beginning and 75.9 MB in the end (delta: -6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:07,004 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 88.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:07,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.97 ms. Allocated memory is still 111.1 MB. Free memory was 68.8 MB in the beginning and 75.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:07,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 88.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 830.97 ms. Allocated memory is still 111.1 MB. Free memory was 68.8 MB in the beginning and 75.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:12:09,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:12:09,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:12:09,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:12:09,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:12:09,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:12:09,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:12:09,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:12:09,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:12:09,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:12:09,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:12:09,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:12:09,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:12:09,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:12:09,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:12:09,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:12:09,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:12:09,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:12:09,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:12:09,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:12:09,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:12:09,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:12:09,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:12:09,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:12:09,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:12:09,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:12:09,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:12:09,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:12:09,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:12:09,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:12:09,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:12:09,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:12:09,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:12:09,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:12:09,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:12:09,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:12:09,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:12:09,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:12:09,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:12:09,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:12:09,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:12:09,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-10-16 02:12:09,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:12:09,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:12:09,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:12:09,459 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:12:09,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:12:09,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:12:09,460 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:12:09,460 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:12:09,460 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:12:09,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:12:09,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:12:09,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:12:09,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:12:09,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:12:09,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:12:09,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:12:09,465 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:12:09,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:12:09,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:12:09,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:12:09,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:12:09,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:12:09,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:12:09,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:12:09,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:12:09,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:12:09,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:12:09,467 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:12:09,468 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:09,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:12:09,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:12:09,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:12:09,469 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-16 02:12:09,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:12:09,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:12:09,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:12:09,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:12:09,914 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:12:09,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-16 02:12:10,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/e74e951f0/84d90159b4ad439c8ce19660c58f9ad1/FLAG211c2fdb3 [2021-10-16 02:12:10,821 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:12:10,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-16 02:12:10,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/e74e951f0/84d90159b4ad439c8ce19660c58f9ad1/FLAG211c2fdb3 [2021-10-16 02:12:11,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/data/e74e951f0/84d90159b4ad439c8ce19660c58f9ad1 [2021-10-16 02:12:11,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:12:11,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:12:11,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:11,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:12:11,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:12:11,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:11" (1/1) ... [2021-10-16 02:12:11,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f86458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:11, skipping insertion in model container [2021-10-16 02:12:11,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:11" (1/1) ... [2021-10-16 02:12:11,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:12:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:12:11,885 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_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-16 02:12:11,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:11,970 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:12:11,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:12:12,058 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_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-16 02:12:12,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:12,109 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:12:12,170 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_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-16 02:12:12,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:12,318 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:12:12,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12 WrapperNode [2021-10-16 02:12:12,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:12,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:12:12,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:12:12,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:12:12,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:12:12,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:12:12,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:12:12,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:12:12,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:12:12,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:12:12,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:12:12,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:12:12,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (1/1) ... [2021-10-16 02:12:12,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:12:12,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:12,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:12:12,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:12:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-16 02:12:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:12:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:12:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:12:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-16 02:12:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:12:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:12:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:12:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-16 02:12:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:12:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-16 02:12:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:12:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:12:12,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:12:14,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:12:14,076 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-16 02:12:14,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:14 BoogieIcfgContainer [2021-10-16 02:12:14,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:12:14,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:12:14,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:12:14,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:12:14,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:12:11" (1/3) ... [2021-10-16 02:12:14,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d64e012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:12:14, skipping insertion in model container [2021-10-16 02:12:14,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:12" (2/3) ... [2021-10-16 02:12:14,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d64e012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:12:14, skipping insertion in model container [2021-10-16 02:12:14,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:14" (3/3) ... [2021-10-16 02:12:14,089 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-10-16 02:12:14,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:12:14,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:12:14,180 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:12:14,190 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, mConcurrency=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 [2021-10-16 02:12:14,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:12:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 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) [2021-10-16 02:12:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:12:14,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:14,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:14,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:14,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1383985347, now seen corresponding path program 1 times [2021-10-16 02:12:14,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:14,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375995183] [2021-10-16 02:12:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:14,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:14,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:14,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:12:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:12:14,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:14,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:14,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:14,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375995183] [2021-10-16 02:12:14,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375995183] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:14,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:14,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:12:14,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557729596] [2021-10-16 02:12:14,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:12:14,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:12:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:12:14,833 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-16 02:12:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:14,858 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-10-16 02:12:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:12:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-16 02:12:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:14,867 INFO L225 Difference]: With dead ends: 150 [2021-10-16 02:12:14,867 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 02:12:14,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:12:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 02:12:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-16 02:12:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-10-16 02:12:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-16 02:12:14,911 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2021-10-16 02:12:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-16 02:12:14,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-16 02:12:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-16 02:12:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:12:14,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:14,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:14,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:15,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:15,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -502200470, now seen corresponding path program 1 times [2021-10-16 02:12:15,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:15,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905571121] [2021-10-16 02:12:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:15,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:15,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:12:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:12:15,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:15,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:15,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:15,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905571121] [2021-10-16 02:12:15,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905571121] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:15,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:15,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:12:15,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759624378] [2021-10-16 02:12:15,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:12:15,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:12:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:12:15,564 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-16 02:12:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:15,598 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-10-16 02:12:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:12:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 19 [2021-10-16 02:12:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:15,603 INFO L225 Difference]: With dead ends: 51 [2021-10-16 02:12:15,603 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 02:12:15,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:12:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 02:12:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-16 02:12:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-16 02:12:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-16 02:12:15,622 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2021-10-16 02:12:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:15,623 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-16 02:12:15,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-16 02:12:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-16 02:12:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:12:15,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:15,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:15,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:15,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:15,846 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash 325484390, now seen corresponding path program 1 times [2021-10-16 02:12:15,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:15,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659696172] [2021-10-16 02:12:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:15,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:15,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:15,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:12:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:16,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:16,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:16,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:16,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:16,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659696172] [2021-10-16 02:12:16,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659696172] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:16,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523425572] [2021-10-16 02:12:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:16,301 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:16,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:16,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:12:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:16,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:12:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:16,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:16,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523425572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:16,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:12:16,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-10-16 02:12:16,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795153615] [2021-10-16 02:12:16,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:12:16,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:12:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:12:16,723 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-16 02:12:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:16,733 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-16 02:12:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:12:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 23 [2021-10-16 02:12:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:16,735 INFO L225 Difference]: With dead ends: 38 [2021-10-16 02:12:16,735 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:12:16,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:12:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:12:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 02:12:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2021-10-16 02:12:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-16 02:12:16,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-10-16 02:12:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:16,740 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-16 02:12:16,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-16 02:12:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-16 02:12:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:12:16,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:16,741 INFO L512 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] [2021-10-16 02:12:16,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:16,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:12:17,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:17,145 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1270235960, now seen corresponding path program 1 times [2021-10-16 02:12:17,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:17,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211339165] [2021-10-16 02:12:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:17,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:17,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:17,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:12:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:17,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:17,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:17,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211339165] [2021-10-16 02:12:17,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211339165] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:17,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1201561084] [2021-10-16 02:12:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:17,666 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:17,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:17,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:17,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:12:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:18,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:12:18,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:18,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:18,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1201561084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:18,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:12:18,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-10-16 02:12:18,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200835729] [2021-10-16 02:12:18,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:12:18,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:12:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:12:18,210 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-16 02:12:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:18,230 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-16 02:12:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:12:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 24 [2021-10-16 02:12:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:18,232 INFO L225 Difference]: With dead ends: 38 [2021-10-16 02:12:18,233 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:12:18,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:12:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:12:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 02:12:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-10-16 02:12:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-16 02:12:18,237 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2021-10-16 02:12:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:18,237 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-16 02:12:18,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-16 02:12:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-16 02:12:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:12:18,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:18,239 INFO L512 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] [2021-10-16 02:12:18,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:18,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:12:18,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:18,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1663262970, now seen corresponding path program 1 times [2021-10-16 02:12:18,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:18,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419784856] [2021-10-16 02:12:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:18,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:18,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:18,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:12:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:18,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:18,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:19,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:19,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:19,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419784856] [2021-10-16 02:12:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419784856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:19,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1126921456] [2021-10-16 02:12:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:19,220 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:19,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:19,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:19,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:12:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:19,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:19,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:19,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:19,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1126921456] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:19,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997102322] [2021-10-16 02:12:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:19,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:19,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:12:20,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:12:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:12:20,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:20,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:20,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997102322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:20,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:12:20,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-16 02:12:20,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163394324] [2021-10-16 02:12:20,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:12:20,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:12:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:12:20,687 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 02:12:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:21,029 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-10-16 02:12:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:12:21,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 24 [2021-10-16 02:12:21,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:21,031 INFO L225 Difference]: With dead ends: 46 [2021-10-16 02:12:21,031 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:12:21,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 332.5ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:12:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:12:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-16 02:12:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-10-16 02:12:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-16 02:12:21,036 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2021-10-16 02:12:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:21,036 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-16 02:12:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 02:12:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-16 02:12:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:12:21,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:21,037 INFO L512 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] [2021-10-16 02:12:21,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:21,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:21,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:21,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:21,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:21,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1293773121, now seen corresponding path program 1 times [2021-10-16 02:12:21,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:21,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509341128] [2021-10-16 02:12:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:21,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:21,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:21,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:12:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:22,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:22,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:12:22,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:12:22,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:22,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509341128] [2021-10-16 02:12:22,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509341128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:22,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [534391516] [2021-10-16 02:12:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:22,287 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:22,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:12:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:22,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:22,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:12:22,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:12:23,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [534391516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:23,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553000694] [2021-10-16 02:12:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:23,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:23,025 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:12:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:12:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:23,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:12:23,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:23,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:12:23,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553000694] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:23,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:12:23,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-10-16 02:12:23,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938911831] [2021-10-16 02:12:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:12:23,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:12:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:12:23,492 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-16 02:12:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:23,526 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-10-16 02:12:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:12:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-10-16 02:12:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:23,544 INFO L225 Difference]: With dead ends: 50 [2021-10-16 02:12:23,544 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:12:23,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:12:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:12:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-16 02:12:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 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) [2021-10-16 02:12:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-16 02:12:23,549 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2021-10-16 02:12:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:23,549 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-16 02:12:23,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-16 02:12:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-16 02:12:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:12:23,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:23,551 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:23,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:23,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:23,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:24,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:24,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -737324797, now seen corresponding path program 1 times [2021-10-16 02:12:24,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:24,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416089623] [2021-10-16 02:12:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:24,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:24,167 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:24,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:12:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:24,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:24,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:24,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:24,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:24,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416089623] [2021-10-16 02:12:24,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416089623] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:24,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [444926253] [2021-10-16 02:12:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:24,791 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:24,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:24,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:24,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 02:12:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:25,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:25,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:25,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:25,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [444926253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:25,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459359883] [2021-10-16 02:12:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:25,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:25,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:25,699 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:12:25,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 02:12:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:26,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:12:26,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:26,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:12:26,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459359883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:26,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:12:26,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 02:12:26,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098912829] [2021-10-16 02:12:26,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:12:26,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:12:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:12:26,316 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-16 02:12:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:26,470 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2021-10-16 02:12:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:12:26,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 31 [2021-10-16 02:12:26,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:26,478 INFO L225 Difference]: With dead ends: 65 [2021-10-16 02:12:26,478 INFO L226 Difference]: Without dead ends: 40 [2021-10-16 02:12:26,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:12:26,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-16 02:12:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-16 02:12:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 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) [2021-10-16 02:12:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-10-16 02:12:26,484 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 31 [2021-10-16 02:12:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:26,485 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-10-16 02:12:26,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-16 02:12:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-10-16 02:12:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:12:26,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:26,490 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-10-16 02:12:26,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:26,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:26,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-16 02:12:27,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:27,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1549750533, now seen corresponding path program 2 times [2021-10-16 02:12:27,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:27,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340702091] [2021-10-16 02:12:27,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:12:27,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:27,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:27,094 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:27,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:12:27,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:12:27,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:12:27,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:12:27,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:27,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:12:27,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-10-16 02:12:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-16 02:12:28,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-16 02:12:28,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:28,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340702091] [2021-10-16 02:12:28,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340702091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:28,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:28,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:12:28,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990921991] [2021-10-16 02:12:28,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:12:28,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:12:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:12:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:12:28,921 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-16 02:12:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:28,925 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-16 02:12:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:12:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 39 [2021-10-16 02:12:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:28,926 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:12:28,926 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:12:28,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:12:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:12:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:12:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:12:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:12:28,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-10-16 02:12:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:28,928 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:12:28,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-16 02:12:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:12:28,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:12:28,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:12:28,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:29,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:12:29,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:12:29,449 INFO L857 garLoopResultBuilder]: For program point L1505(line 1505) no Hoare annotation was computed. [2021-10-16 02:12:29,449 INFO L860 garLoopResultBuilder]: At program point L1439(lines 1421 1440) the Hoare annotation is: true [2021-10-16 02:12:29,449 INFO L857 garLoopResultBuilder]: For program point L1505-2(line 1505) no Hoare annotation was computed. [2021-10-16 02:12:29,449 INFO L860 garLoopResultBuilder]: At program point L1456(lines 1441 1457) the Hoare annotation is: true [2021-10-16 02:12:29,449 INFO L857 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-10-16 02:12:29,449 INFO L857 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point L1606-2(lines 1606 1613) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L853 garLoopResultBuilder]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (= |#t~string44.offset| (_ bv0 32)) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point L1606-4(lines 1606 1613) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L860 garLoopResultBuilder]: At program point L1590(lines 1586 1591) the Hoare annotation is: true [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-10-16 02:12:29,450 INFO L857 garLoopResultBuilder]: For program point L1343(line 1343) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L1343-2(line 1343) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L860 garLoopResultBuilder]: At program point L1510(lines 1497 1511) the Hoare annotation is: true [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-16 02:12:29,451 INFO L860 garLoopResultBuilder]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L860 garLoopResultBuilder]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point L1611-2(lines 1611 1612) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L853 garLoopResultBuilder]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (= |#t~string44.offset| (_ bv0 32)) (bvslt ULTIMATE.start_main_~i~4 ULTIMATE.start_main_~argc~0) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L857 garLoopResultBuilder]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2021-10-16 02:12:29,452 INFO L860 garLoopResultBuilder]: At program point L1347(lines 1338 1350) the Hoare annotation is: true [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1447-3(lines 1447 1453) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L860 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1596-2(lines 1596 1597) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L853 garLoopResultBuilder]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (= |#t~string44.offset| (_ bv0 32)) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1596-4(lines 1596 1597) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point L1431-2(lines 1430 1436) no Hoare annotation was computed. [2021-10-16 02:12:29,453 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:12:29,454 INFO L857 garLoopResultBuilder]: For program point L1432(line 1432) no Hoare annotation was computed. [2021-10-16 02:12:29,454 INFO L857 garLoopResultBuilder]: For program point L1432-2(line 1432) no Hoare annotation was computed. [2021-10-16 02:12:29,454 INFO L857 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-10-16 02:12:29,454 INFO L857 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-10-16 02:12:29,458 INFO L857 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-10-16 02:12:29,458 INFO L857 garLoopResultBuilder]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2021-10-16 02:12:29,458 INFO L857 garLoopResultBuilder]: For program point L1466-2(lines 1466 1477) no Hoare annotation was computed. [2021-10-16 02:12:29,458 INFO L857 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-10-16 02:12:29,458 INFO L857 garLoopResultBuilder]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2021-10-16 02:12:29,459 INFO L860 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-10-16 02:12:29,459 INFO L857 garLoopResultBuilder]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2021-10-16 02:12:29,459 INFO L857 garLoopResultBuilder]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2021-10-16 02:12:29,459 INFO L857 garLoopResultBuilder]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-10-16 02:12:29,459 INFO L857 garLoopResultBuilder]: For program point L1615-2(lines 1615 1616) no Hoare annotation was computed. [2021-10-16 02:12:29,460 INFO L860 garLoopResultBuilder]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-10-16 02:12:29,460 INFO L857 garLoopResultBuilder]: For program point L1615-4(lines 1615 1616) no Hoare annotation was computed. [2021-10-16 02:12:29,460 INFO L857 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-10-16 02:12:29,460 INFO L857 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-10-16 02:12:29,460 INFO L857 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-10-16 02:12:29,461 INFO L857 garLoopResultBuilder]: For program point L1435-1(line 1435) no Hoare annotation was computed. [2021-10-16 02:12:29,461 INFO L860 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-10-16 02:12:29,461 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-10-16 02:12:29,461 INFO L857 garLoopResultBuilder]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2021-10-16 02:12:29,462 INFO L860 garLoopResultBuilder]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-10-16 02:12:29,462 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:12:29,462 INFO L857 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-10-16 02:12:29,462 INFO L857 garLoopResultBuilder]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2021-10-16 02:12:29,463 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-10-16 02:12:29,463 INFO L857 garLoopResultBuilder]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2021-10-16 02:12:29,463 INFO L857 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-10-16 02:12:29,464 INFO L857 garLoopResultBuilder]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2021-10-16 02:12:29,464 INFO L857 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-10-16 02:12:29,465 INFO L857 garLoopResultBuilder]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2021-10-16 02:12:29,465 INFO L857 garLoopResultBuilder]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2021-10-16 02:12:29,465 INFO L860 garLoopResultBuilder]: At program point L1620(lines 1592 1621) the Hoare annotation is: true [2021-10-16 02:12:29,472 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:12:29,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:12:29 BoogieIcfgContainer [2021-10-16 02:12:29,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:12:29,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:12:29,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:12:29,501 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:12:29,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:14" (3/4) ... [2021-10-16 02:12:29,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:12:29,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-10-16 02:12:29,535 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-16 02:12:29,535 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:12:29,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:12:29,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:12:29,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:12:29,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:12:29,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:12:29,645 INFO L168 Benchmark]: Toolchain (without parser) took 18618.88 ms. Allocated memory was 52.4 MB in the beginning and 113.2 MB in the end (delta: 60.8 MB). Free memory was 26.0 MB in the beginning and 56.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,646 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:29,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1291.45 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 25.8 MB in the beginning and 50.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.80 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 46.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,647 INFO L168 Benchmark]: Boogie Preprocessor took 98.00 ms. Allocated memory is still 77.6 MB. Free memory was 46.4 MB in the beginning and 41.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,648 INFO L168 Benchmark]: RCFGBuilder took 1548.86 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 41.8 MB in the beginning and 65.9 MB in the end (delta: -24.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,648 INFO L168 Benchmark]: TraceAbstraction took 15418.31 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.4 MB in the beginning and 64.9 MB in the end (delta: 464.0 kB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,649 INFO L168 Benchmark]: Witness Printer took 143.02 ms. Allocated memory is still 113.2 MB. Free memory was 64.9 MB in the beginning and 56.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:29,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1291.45 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 25.8 MB in the beginning and 50.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.80 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 46.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.00 ms. Allocated memory is still 77.6 MB. Free memory was 46.4 MB in the beginning and 41.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1548.86 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 41.8 MB in the beginning and 65.9 MB in the end (delta: -24.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15418.31 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.4 MB in the beginning and 64.9 MB in the end (delta: 464.0 kB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Witness Printer took 143.02 ms. Allocated memory is still 113.2 MB. Free memory was 64.9 MB in the beginning and 56.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1371]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15292.1ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 24.3ms, AutomataDifference: 709.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 301.8ms, InitialAbstractionConstructionTime: 15.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 282 SDtfs, 85 SDslu, 279 SDs, 0 SdLazy, 78 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 319.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 807 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 709.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 55.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 40 NumberOfFragments, 91 HoareAnnotationTreeSize, 16 FomulaSimplifications, 178 FormulaSimplificationTreeSizeReduction, 136.8ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 157.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 419.7ms SsaConstructionTime, 2194.1ms SatisfiabilityAnalysisTime, 4677.4ms InterpolantComputationTime, 417 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 1990 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 150/222 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1611]: Loop Invariant Derived loop invariant: (((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && "--" == 0bv32) && ~bvslt64(i, argc)) && "--" == 0bv32) && !("--" == "--")) && ~bvsle32(argc, 10000bv32)) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1462]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1615]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1596]: Loop Invariant Derived loop invariant: ((("--" == 0bv32 && "--" == 0bv32) && !("--" == "--")) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1586]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: ((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && "--" == 0bv32) && "--" == 0bv32) && !("--" == "--")) && ~bvsle32(argc, 10000bv32)) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1421]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1324]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1441]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1480]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1338]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1497]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:12:29,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17d3a2f6-dca7-4d30-8f7b-2f1d4727446c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...