./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:49:27,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:49:27,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:49:27,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:49:27,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:49:27,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:49:27,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:49:27,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:49:27,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:49:27,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:49:27,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:49:27,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:49:27,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:49:27,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:49:27,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:49:27,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:49:27,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:49:27,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:49:27,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:49:27,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:49:27,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:49:27,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:49:27,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:49:27,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:49:27,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:49:27,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:49:27,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:49:27,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:49:27,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:49:27,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:49:27,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:49:27,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:49:27,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:49:27,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:49:27,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:49:27,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:49:27,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:49:27,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:49:27,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:49:27,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:49:27,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:49:27,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:49:27,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:49:27,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:49:27,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:49:27,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:49:27,879 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:49:27,879 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:49:27,879 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:49:27,879 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:49:27,880 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:49:27,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:49:27,880 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:49:27,880 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:49:27,881 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:49:27,881 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:49:27,881 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:49:27,881 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:49:27,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:49:27,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:49:27,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:49:27,883 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:49:27,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:49:27,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:49:27,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:49:27,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:49:27,884 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:49:27,885 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:49:27,885 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:49:27,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:49:27,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:49:27,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:49:27,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:49:27,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:49:27,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:49:27,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:49:27,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:49:27,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:49:27,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:49:27,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:49:27,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:49:27,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:49:27,889 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2021-11-12 23:49:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:49:28,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:49:28,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:49:28,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:49:28,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:49:28,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-12 23:49:28,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/4b67ba081/eb4393b48097464e9835642e2af544be/FLAGd23b1c7d7 [2021-11-12 23:49:29,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:49:29,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-12 23:49:29,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/4b67ba081/eb4393b48097464e9835642e2af544be/FLAGd23b1c7d7 [2021-11-12 23:49:29,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/4b67ba081/eb4393b48097464e9835642e2af544be [2021-11-12 23:49:29,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:49:29,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:49:29,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:49:29,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:49:29,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:49:29,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:49:29" (1/1) ... [2021-11-12 23:49:29,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fc576f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:29, skipping insertion in model container [2021-11-12 23:49:29,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:49:29" (1/1) ... [2021-11-12 23:49:29,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:49:29,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:49:29,734 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-12 23:49:29,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:49:29,908 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:49:29,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7322528b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:29, skipping insertion in model container [2021-11-12 23:49:29,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:49:29,909 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:49:29,912 INFO L158 Benchmark]: Toolchain (without parser) took 721.43ms. Allocated memory is still 92.3MB. Free memory was 69.5MB in the beginning and 56.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:49:29,913 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:49:29,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.47ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 56.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:49:29,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.47ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 56.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:49:32,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:49:32,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:49:32,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:49:32,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:49:32,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:49:32,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:49:32,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:49:32,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:49:32,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:49:32,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:49:32,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:49:32,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:49:32,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:49:32,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:49:32,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:49:32,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:49:32,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:49:32,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:49:32,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:49:32,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:49:32,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:49:32,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:49:32,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:49:32,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:49:32,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:49:32,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:49:32,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:49:32,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:49:32,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:49:32,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:49:32,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:49:32,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:49:32,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:49:32,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:49:32,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:49:32,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:49:32,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:49:32,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:49:32,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:49:32,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:49:32,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:49:32,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:49:32,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:49:32,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:49:32,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:49:32,506 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:49:32,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:49:32,506 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:49:32,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:49:32,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:49:32,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:49:32,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:49:32,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:49:32,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:49:32,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:49:32,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:49:32,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:49:32,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:49:32,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:49:32,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:49:32,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:49:32,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:49:32,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:49:32,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:49:32,512 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:49:32,512 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:49:32,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:49:32,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:49:32,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:49:32,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:49:32,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:49:32,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:49:32,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:49:32,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:49:32,514 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:49:32,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:32,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:49:32,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:49:32,515 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2021-11-12 23:49:32,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:49:32,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:49:32,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:49:32,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:49:32,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:49:32,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-12 23:49:33,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/08f84caa1/675b848694264015a685f11017fbd247/FLAG502cb18df [2021-11-12 23:49:33,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:49:33,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-12 23:49:33,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/08f84caa1/675b848694264015a685f11017fbd247/FLAG502cb18df [2021-11-12 23:49:33,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/data/08f84caa1/675b848694264015a685f11017fbd247 [2021-11-12 23:49:33,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:49:33,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:49:33,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:49:33,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:49:33,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:49:33,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:49:33" (1/1) ... [2021-11-12 23:49:33,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e388c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:33, skipping insertion in model container [2021-11-12 23:49:33,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:49:33" (1/1) ... [2021-11-12 23:49:33,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:49:34,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:49:34,553 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-12 23:49:34,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:49:34,761 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:49:34,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:49:34,799 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-12 23:49:34,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:49:34,961 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:49:35,012 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_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-12 23:49:35,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:49:35,161 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:49:35,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35 WrapperNode [2021-11-12 23:49:35,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:49:35,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:49:35,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:49:35,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:49:35,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:49:35,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:49:35,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:49:35,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:49:35,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:49:35,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:49:35,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:49:35,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:49:35,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (1/1) ... [2021-11-12 23:49:35,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:49:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:49:35,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:49:35,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:49:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:49:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:49:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:49:35,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:49:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:49:35,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:49:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:49:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:49:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:49:35,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:49:35,778 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:49:41,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:49:41,440 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-12 23:49:41,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:49:41 BoogieIcfgContainer [2021-11-12 23:49:41,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:49:41,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:49:41,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:49:41,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:49:41,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:49:33" (1/3) ... [2021-11-12 23:49:41,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc1d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:49:41, skipping insertion in model container [2021-11-12 23:49:41,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:49:35" (2/3) ... [2021-11-12 23:49:41,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc1d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:49:41, skipping insertion in model container [2021-11-12 23:49:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:49:41" (3/3) ... [2021-11-12 23:49:41,459 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2021-11-12 23:49:41,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:49:41,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-12 23:49:41,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:49:41,536 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:49:41,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-12 23:49:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:49:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:49:41,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:41,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:49:41,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-12 23:49:41,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:41,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845394032] [2021-11-12 23:49:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:41,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:41,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:41,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:49:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:41,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:49:41,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:41,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:41,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:41,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845394032] [2021-11-12 23:49:41,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845394032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:41,826 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:41,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:49:41,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910155779] [2021-11-12 23:49:41,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:41,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:49:41,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:49:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:49:41,918 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:42,070 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-12 23:49:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:49:42,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-12 23:49:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:42,106 INFO L225 Difference]: With dead ends: 1256 [2021-11-12 23:49:42,106 INFO L226 Difference]: Without dead ends: 1254 [2021-11-12 23:49:42,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:49:42,112 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:42,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 28.91ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:49:42,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-12 23:49:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-12 23:49:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:49:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-12 23:49:42,234 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-12 23:49:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:42,235 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-12 23:49:42,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-12 23:49:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:49:42,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:42,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:49:42,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:49:42,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:42,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-12 23:49:42,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:42,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844524576] [2021-11-12 23:49:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:42,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:42,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:42,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:49:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:42,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:49:42,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:42,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:49:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:42,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:42,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:42,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844524576] [2021-11-12 23:49:42,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844524576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:42,738 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:42,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:49:42,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389865064] [2021-11-12 23:49:42,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:49:42,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:49:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:49:42,742 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:45,489 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-12 23:49:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-12 23:49:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:45,499 INFO L225 Difference]: With dead ends: 1291 [2021-11-12 23:49:45,499 INFO L226 Difference]: Without dead ends: 1291 [2021-11-12 23:49:45,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:49:45,502 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2255.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.97ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2666.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:45,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 16.97ms Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2666.42ms Time] [2021-11-12 23:49:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-12 23:49:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-12 23:49:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:49:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-12 23:49:45,549 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-12 23:49:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:45,549 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-12 23:49:45,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-12 23:49:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:49:45,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:45,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:49:45,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:45,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:45,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-12 23:49:45,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:45,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671184577] [2021-11-12 23:49:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:45,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:45,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:45,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:45,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:49:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:45,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:45,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:45,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:49:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:45,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:46,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:46,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671184577] [2021-11-12 23:49:46,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671184577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:46,065 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:46,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:49:46,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757702184] [2021-11-12 23:49:46,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:46,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:49:46,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:49:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:46,067 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:52,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:52,774 INFO L93 Difference]: Finished difference Result 1591 states and 1745 transitions. [2021-11-12 23:49:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:49:52,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-12 23:49:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:52,784 INFO L225 Difference]: With dead ends: 1591 [2021-11-12 23:49:52,784 INFO L226 Difference]: Without dead ends: 1591 [2021-11-12 23:49:52,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:52,786 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 615 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5880.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6600.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:52,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1824 Invalid, 1453 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [28 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 6600.84ms Time] [2021-11-12 23:49:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2021-11-12 23:49:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1393. [2021-11-12 23:49:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:49:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-12 23:49:52,832 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-12 23:49:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:52,833 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-12 23:49:52,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-12 23:49:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:49:52,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:52,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:49:52,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:53,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:53,048 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-12 23:49:53,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:53,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705239515] [2021-11-12 23:49:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:53,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:53,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:53,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:53,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:49:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:49:53,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:53,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:53,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:53,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705239515] [2021-11-12 23:49:53,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705239515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:53,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:53,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:49:53,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076643139] [2021-11-12 23:49:53,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:53,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:49:53,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:49:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:53,218 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:53,392 INFO L93 Difference]: Finished difference Result 2738 states and 3284 transitions. [2021-11-12 23:49:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:49:53,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 6 [2021-11-12 23:49:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:53,411 INFO L225 Difference]: With dead ends: 2738 [2021-11-12 23:49:53,412 INFO L226 Difference]: Without dead ends: 2738 [2021-11-12 23:49:53,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:53,415 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 2286 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:53,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 2961 Invalid, 19 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 95.02ms Time] [2021-11-12 23:49:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-12 23:49:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2209. [2021-11-12 23:49:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1662 states have (on average 1.9494584837545126) internal successors, (3240), 2194 states have internal predecessors, (3240), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:49:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3284 transitions. [2021-11-12 23:49:53,509 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3284 transitions. Word has length 6 [2021-11-12 23:49:53,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:53,509 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3284 transitions. [2021-11-12 23:49:53,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3284 transitions. [2021-11-12 23:49:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:49:53,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:53,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:53,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:53,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:53,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-12 23:49:53,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:53,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832540790] [2021-11-12 23:49:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:53,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:53,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:53,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:53,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:49:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:53,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:49:53,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:53,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:53,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:53,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832540790] [2021-11-12 23:49:53,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832540790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:53,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:53,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:49:53,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618281995] [2021-11-12 23:49:53,955 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:53,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:49:53,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:49:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:53,957 INFO L87 Difference]: Start difference. First operand 2209 states and 3284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:54,013 INFO L93 Difference]: Finished difference Result 2149 states and 3198 transitions. [2021-11-12 23:49:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 11 [2021-11-12 23:49:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:54,031 INFO L225 Difference]: With dead ends: 2149 [2021-11-12 23:49:54,031 INFO L226 Difference]: Without dead ends: 2149 [2021-11-12 23:49:54,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:54,033 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:54,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1243 Invalid, 14 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 20.17ms Time] [2021-11-12 23:49:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-12 23:49:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2021-11-12 23:49:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1626 states have (on average 1.9397293972939729) internal successors, (3154), 2134 states have internal predecessors, (3154), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:49:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3198 transitions. [2021-11-12 23:49:54,108 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3198 transitions. Word has length 11 [2021-11-12 23:49:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:54,109 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3198 transitions. [2021-11-12 23:49:54,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3198 transitions. [2021-11-12 23:49:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:49:54,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:54,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:54,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:54,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:54,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-12 23:49:54,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:54,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792493213] [2021-11-12 23:49:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:54,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:54,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:54,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:54,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:49:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:54,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:54,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:54,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:54,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:54,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792493213] [2021-11-12 23:49:54,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792493213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:54,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:54,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:49:54,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148717712] [2021-11-12 23:49:54,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:54,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:54,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:54,581 INFO L87 Difference]: Start difference. First operand 2149 states and 3198 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:54,704 INFO L93 Difference]: Finished difference Result 2121 states and 3142 transitions. [2021-11-12 23:49:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:49:54,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 13 [2021-11-12 23:49:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:54,718 INFO L225 Difference]: With dead ends: 2121 [2021-11-12 23:49:54,718 INFO L226 Difference]: Without dead ends: 2121 [2021-11-12 23:49:54,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:49:54,720 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.86ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:54,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2323 Invalid, 67 Unknown, 0 Unchecked, 18.86ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 64.93ms Time] [2021-11-12 23:49:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-11-12 23:49:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2119. [2021-11-12 23:49:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 1610 states have (on average 1.9229813664596274) internal successors, (3096), 2104 states have internal predecessors, (3096), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:49:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3140 transitions. [2021-11-12 23:49:54,787 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3140 transitions. Word has length 13 [2021-11-12 23:49:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:54,788 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 3140 transitions. [2021-11-12 23:49:54,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3140 transitions. [2021-11-12 23:49:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:49:54,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:54,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:54,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:55,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:55,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:55,005 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-12 23:49:55,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:55,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558139865] [2021-11-12 23:49:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:55,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:55,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:55,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:55,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:49:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:55,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:55,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:55,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:49:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:55,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:55,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:55,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558139865] [2021-11-12 23:49:55,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558139865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:55,375 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:55,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:49:55,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710523309] [2021-11-12 23:49:55,376 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:55,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:49:55,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:49:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:49:55,377 INFO L87 Difference]: Start difference. First operand 2119 states and 3140 transitions. Second operand has 4 states, 3 states have (on average 9.0) 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) [2021-11-12 23:49:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:58,544 INFO L93 Difference]: Finished difference Result 2768 states and 3973 transitions. [2021-11-12 23:49:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) 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 [2021-11-12 23:49:58,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:58,562 INFO L225 Difference]: With dead ends: 2768 [2021-11-12 23:49:58,562 INFO L226 Difference]: Without dead ends: 2768 [2021-11-12 23:49:58,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:58,564 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2608.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.31ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3096.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:58,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 11.31ms Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3096.40ms Time] [2021-11-12 23:49:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2021-11-12 23:49:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2115. [2021-11-12 23:49:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1610 states have (on average 1.9180124223602484) internal successors, (3088), 2100 states have internal predecessors, (3088), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:49:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 3132 transitions. [2021-11-12 23:49:58,641 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 3132 transitions. Word has length 27 [2021-11-12 23:49:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:58,641 INFO L470 AbstractCegarLoop]: Abstraction has 2115 states and 3132 transitions. [2021-11-12 23:49:58,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) 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) [2021-11-12 23:49:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 3132 transitions. [2021-11-12 23:49:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:49:58,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:58,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:58,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:49:58,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:58,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:49:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-12 23:49:58,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:58,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997747996] [2021-11-12 23:49:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:58,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:58,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:58,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:49:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:49:59,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:59,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:49:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:59,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:59,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:59,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997747996] [2021-11-12 23:49:59,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997747996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:59,748 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:59,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:49:59,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219224627] [2021-11-12 23:49:59,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:59,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:49:59,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:49:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:49:59,750 INFO L87 Difference]: Start difference. First operand 2115 states and 3132 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:08,757 INFO L93 Difference]: Finished difference Result 2389 states and 3321 transitions. [2021-11-12 23:50:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:50:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 [2021-11-12 23:50:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:08,772 INFO L225 Difference]: With dead ends: 2389 [2021-11-12 23:50:08,772 INFO L226 Difference]: Without dead ends: 2389 [2021-11-12 23:50:08,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:50:08,773 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 1487 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7893.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.88ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8822.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:08,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 2315 Invalid, 2056 Unknown, 0 Unchecked, 13.88ms Time], IncrementalHoareTripleChecker [38 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 8822.31ms Time] [2021-11-12 23:50:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-12 23:50:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-11-12 23:50:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1610 states have (on average 1.9130434782608696) internal successors, (3080), 2096 states have internal predecessors, (3080), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:50:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3124 transitions. [2021-11-12 23:50:08,852 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3124 transitions. Word has length 27 [2021-11-12 23:50:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:08,853 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 3124 transitions. [2021-11-12 23:50:08,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3124 transitions. [2021-11-12 23:50:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 23:50:08,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:08,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:08,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:09,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:09,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-12 23:50:09,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:09,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397946956] [2021-11-12 23:50:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:09,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:09,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:09,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:50:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:09,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:50:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:09,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:09,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:09,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397946956] [2021-11-12 23:50:09,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397946956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:09,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:09,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:50:09,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58182505] [2021-11-12 23:50:09,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:09,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:50:09,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:50:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:50:09,503 INFO L87 Difference]: Start difference. First operand 2111 states and 3124 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2021-11-12 23:50:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:09,567 INFO L93 Difference]: Finished difference Result 2099 states and 3104 transitions. [2021-11-12 23:50:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:50:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) Word has length 42 [2021-11-12 23:50:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:09,581 INFO L225 Difference]: With dead ends: 2099 [2021-11-12 23:50:09,581 INFO L226 Difference]: Without dead ends: 2099 [2021-11-12 23:50:09,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:50:09,582 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:09,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 3.56ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 39.63ms Time] [2021-11-12 23:50:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-11-12 23:50:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2021-11-12 23:50:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1598 states have (on average 1.9148936170212767) internal successors, (3060), 2084 states have internal predecessors, (3060), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:50:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3104 transitions. [2021-11-12 23:50:09,632 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3104 transitions. Word has length 42 [2021-11-12 23:50:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:09,632 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 3104 transitions. [2021-11-12 23:50:09,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2021-11-12 23:50:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3104 transitions. [2021-11-12 23:50:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 23:50:09,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:09,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:09,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:09,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:09,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:09,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-12 23:50:09,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:09,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023906358] [2021-11-12 23:50:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:09,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:09,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:09,849 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:50:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:10,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:50:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:10,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:10,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:10,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023906358] [2021-11-12 23:50:10,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023906358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:10,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:10,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:50:10,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636685738] [2021-11-12 23:50:10,810 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:10,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:50:10,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:50:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:50:10,811 INFO L87 Difference]: Start difference. First operand 2099 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:10,904 INFO L93 Difference]: Finished difference Result 1915 states and 2749 transitions. [2021-11-12 23:50:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:50:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-12 23:50:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:10,918 INFO L225 Difference]: With dead ends: 1915 [2021-11-12 23:50:10,918 INFO L226 Difference]: Without dead ends: 1915 [2021-11-12 23:50:10,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:50:10,919 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:10,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 76.41ms Time] [2021-11-12 23:50:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-12 23:50:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2021-11-12 23:50:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1414 states have (on average 1.913012729844413) internal successors, (2705), 1900 states have internal predecessors, (2705), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:50:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2749 transitions. [2021-11-12 23:50:10,963 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2749 transitions. Word has length 50 [2021-11-12 23:50:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:10,964 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2749 transitions. [2021-11-12 23:50:10,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2749 transitions. [2021-11-12 23:50:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-12 23:50:10,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:10,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:10,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:11,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:11,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-12 23:50:11,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:11,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385920431] [2021-11-12 23:50:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:11,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:11,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:11,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:11,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:50:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:11,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:50:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:11,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:50:11,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:50:12,178 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:50:12,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 23:50:12,186 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:50:12,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 23:50:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:12,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:16,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:16,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385920431] [2021-11-12 23:50:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385920431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:16,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:50:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216004764] [2021-11-12 23:50:16,893 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:16,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:50:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:50:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:50:16,895 INFO L87 Difference]: Start difference. First operand 1915 states and 2749 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:25,079 INFO L93 Difference]: Finished difference Result 2621 states and 3389 transitions. [2021-11-12 23:50:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:50:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-12 23:50:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:25,095 INFO L225 Difference]: With dead ends: 2621 [2021-11-12 23:50:25,095 INFO L226 Difference]: Without dead ends: 2621 [2021-11-12 23:50:25,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:50:25,097 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1451 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6967.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.48ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2033 IncrementalHoareTripleChecker+Unchecked, 8060.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:25,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 2447 Invalid, 4014 Unknown, 0 Unchecked, 19.48ms Time], IncrementalHoareTripleChecker [89 Valid, 1892 Invalid, 0 Unknown, 2033 Unchecked, 8060.97ms Time] [2021-11-12 23:50:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-12 23:50:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2010. [2021-11-12 23:50:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1541 states have (on average 1.8650227125243348) internal successors, (2874), 1992 states have internal predecessors, (2874), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-12 23:50:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2924 transitions. [2021-11-12 23:50:25,148 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2924 transitions. Word has length 53 [2021-11-12 23:50:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:25,149 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 2924 transitions. [2021-11-12 23:50:25,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2924 transitions. [2021-11-12 23:50:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 23:50:25,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:25,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:25,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:25,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:25,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-12 23:50:25,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:25,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280508535] [2021-11-12 23:50:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:25,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:25,377 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:25,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:50:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:25,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:50:25,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:25,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:25,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:50:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:26,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:26,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280508535] [2021-11-12 23:50:26,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280508535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:26,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:50:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171169546] [2021-11-12 23:50:26,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:26,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:50:26,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:50:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:50:26,094 INFO L87 Difference]: Start difference. First operand 2010 states and 2924 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:28,261 INFO L93 Difference]: Finished difference Result 2008 states and 2920 transitions. [2021-11-12 23:50:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:50:28,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 55 [2021-11-12 23:50:28,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:28,270 INFO L225 Difference]: With dead ends: 2008 [2021-11-12 23:50:28,270 INFO L226 Difference]: Without dead ends: 2008 [2021-11-12 23:50:28,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:50:28,271 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1809.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2134.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:28,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 650 Invalid, 618 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [29 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 2134.75ms Time] [2021-11-12 23:50:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-12 23:50:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-11-12 23:50:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1541 states have (on average 1.8624269954574952) internal successors, (2870), 1990 states have internal predecessors, (2870), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-12 23:50:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2920 transitions. [2021-11-12 23:50:28,315 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2920 transitions. Word has length 55 [2021-11-12 23:50:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:28,315 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2920 transitions. [2021-11-12 23:50:28,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2920 transitions. [2021-11-12 23:50:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:50:28,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:28,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:28,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:28,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:28,529 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-12 23:50:28,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:28,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917419738] [2021-11-12 23:50:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:28,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:28,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:28,531 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:28,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:50:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:28,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:50:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:28,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:50:28,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 23:50:28,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 23:50:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:28,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:28,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:28,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917419738] [2021-11-12 23:50:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917419738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:28,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:28,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:50:28,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421676305] [2021-11-12 23:50:28,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:28,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:50:28,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:50:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:50:28,958 INFO L87 Difference]: Start difference. First operand 2008 states and 2920 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:32,533 INFO L93 Difference]: Finished difference Result 2007 states and 2918 transitions. [2021-11-12 23:50:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:50:32,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-11-12 23:50:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:32,540 INFO L225 Difference]: With dead ends: 2007 [2021-11-12 23:50:32,540 INFO L226 Difference]: Without dead ends: 2007 [2021-11-12 23:50:32,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:50:32,541 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2987.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3489.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:32,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2799 Invalid, 1591 Unknown, 0 Unchecked, 9.38ms Time], IncrementalHoareTripleChecker [1 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 3489.83ms Time] [2021-11-12 23:50:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-11-12 23:50:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2007. [2021-11-12 23:50:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1541 states have (on average 1.8611291369240752) internal successors, (2868), 1989 states have internal predecessors, (2868), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-12 23:50:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2918 transitions. [2021-11-12 23:50:32,581 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2918 transitions. Word has length 58 [2021-11-12 23:50:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:32,582 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2918 transitions. [2021-11-12 23:50:32,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2918 transitions. [2021-11-12 23:50:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:50:32,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:32,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:32,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:32,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:32,796 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-12 23:50:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:32,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261552073] [2021-11-12 23:50:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:32,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:32,799 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:32,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:50:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:33,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:50:33,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:33,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:50:33,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:50:33,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 23:50:33,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 23:50:33,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 23:50:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:33,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:33,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:33,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261552073] [2021-11-12 23:50:33,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261552073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:33,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:33,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:50:33,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603292738] [2021-11-12 23:50:33,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:33,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:50:33,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:50:33,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:33,637 INFO L87 Difference]: Start difference. First operand 2007 states and 2918 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:44,615 INFO L93 Difference]: Finished difference Result 2006 states and 2916 transitions. [2021-11-12 23:50:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:50:44,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-12 23:50:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:44,622 INFO L225 Difference]: With dead ends: 2006 [2021-11-12 23:50:44,623 INFO L226 Difference]: Without dead ends: 2006 [2021-11-12 23:50:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:50:44,624 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9872.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10871.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:44,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3269 Invalid, 2216 Unknown, 0 Unchecked, 13.39ms Time], IncrementalHoareTripleChecker [1 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 10871.74ms Time] [2021-11-12 23:50:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-11-12 23:50:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2006. [2021-11-12 23:50:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1539 states have (on average 1.8622482131254061) internal successors, (2866), 1988 states have internal predecessors, (2866), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-12 23:50:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2916 transitions. [2021-11-12 23:50:44,661 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2916 transitions. Word has length 58 [2021-11-12 23:50:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:44,662 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 2916 transitions. [2021-11-12 23:50:44,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2916 transitions. [2021-11-12 23:50:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 23:50:44,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:44,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:44,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 23:50:44,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:44,892 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-12 23:50:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:44,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420299715] [2021-11-12 23:50:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:44,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:44,895 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:44,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:50:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:50:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:45,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:45,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:45,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420299715] [2021-11-12 23:50:45,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420299715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:45,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:45,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:50:45,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429519999] [2021-11-12 23:50:45,390 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:45,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:50:45,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:50:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:50:45,391 INFO L87 Difference]: Start difference. First operand 2006 states and 2916 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:50:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:45,537 INFO L93 Difference]: Finished difference Result 2016 states and 2933 transitions. [2021-11-12 23:50:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:50:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-11-12 23:50:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:45,554 INFO L225 Difference]: With dead ends: 2016 [2021-11-12 23:50:45,555 INFO L226 Difference]: Without dead ends: 2016 [2021-11-12 23:50:45,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:45,556 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 9 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:45,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4359 Invalid, 58 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 108.38ms Time] [2021-11-12 23:50:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-12 23:50:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2021-11-12 23:50:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1547 states have (on average 1.8603749191984487) internal successors, (2878), 1997 states have internal predecessors, (2878), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-12 23:50:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2933 transitions. [2021-11-12 23:50:45,628 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2933 transitions. Word has length 66 [2021-11-12 23:50:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:45,629 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2933 transitions. [2021-11-12 23:50:45,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:50:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2933 transitions. [2021-11-12 23:50:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 23:50:45,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:45,631 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:45,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:45,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:45,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash -722171842, now seen corresponding path program 1 times [2021-11-12 23:50:45,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:45,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740259589] [2021-11-12 23:50:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:45,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:45,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:45,847 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:45,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:50:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:46,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:50:46,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:46,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:46,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:46,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740259589] [2021-11-12 23:50:46,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740259589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:46,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085421152] [2021-11-12 23:50:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:46,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:46,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:46,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:50:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:50:46,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:47,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:47,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2085421152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:47,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732931327] [2021-11-12 23:50:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:47,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:50:47,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:50:47,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:50:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 23:50:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:50:47,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:47,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:47,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732931327] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:47,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:50:47,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:50:47,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411548914] [2021-11-12 23:50:47,843 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:50:47,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:50:47,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:50:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:50:47,845 INFO L87 Difference]: Start difference. First operand 2016 states and 2933 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:50:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:48,562 INFO L93 Difference]: Finished difference Result 2030 states and 2954 transitions. [2021-11-12 23:50:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:50:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2021-11-12 23:50:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:48,593 INFO L225 Difference]: With dead ends: 2030 [2021-11-12 23:50:48,593 INFO L226 Difference]: Without dead ends: 2024 [2021-11-12 23:50:48,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:50:48,594 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 25 mSDsluCounter, 6521 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 355.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:48,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 7615 Invalid, 188 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [28 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 355.98ms Time] [2021-11-12 23:50:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-12 23:50:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2022. [2021-11-12 23:50:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1553 states have (on average 1.857694784288474) internal successors, (2885), 2003 states have internal predecessors, (2885), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-12 23:50:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2940 transitions. [2021-11-12 23:50:48,632 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2940 transitions. Word has length 68 [2021-11-12 23:50:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:48,633 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 2940 transitions. [2021-11-12 23:50:48,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:50:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2940 transitions. [2021-11-12 23:50:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 23:50:48,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:48,634 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:48,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:48,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-12 23:50:49,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-12 23:50:49,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:50:49,248 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:50:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 337093118, now seen corresponding path program 2 times [2021-11-12 23:50:49,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:49,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495256806] [2021-11-12 23:50:49,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:50:49,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:49,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:49,251 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:49,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:50:49,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:50:49,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:50:49,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:50:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:50,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:50,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495256806] [2021-11-12 23:50:50,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495256806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:50,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420555342] [2021-11-12 23:50:50,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:50:50,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:50,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:50,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:50:51,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:50:51,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:50:51,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:50:51,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:51,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:52,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420555342] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:52,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810001689] [2021-11-12 23:50:52,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:50:52,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:50:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:50:52,133 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:50:52,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-12 23:51:04,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:51:04,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:51:04,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:51:04,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:05,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:05,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810001689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:51:05,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:51:05,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-12 23:51:05,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151079351] [2021-11-12 23:51:05,437 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:51:05,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:51:05,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:51:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:51:05,439 INFO L87 Difference]: Start difference. First operand 2022 states and 2940 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:51:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:07,582 INFO L93 Difference]: Finished difference Result 2048 states and 3006 transitions. [2021-11-12 23:51:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 23:51:07,583 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2021-11-12 23:51:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:07,589 INFO L225 Difference]: With dead ends: 2048 [2021-11-12 23:51:07,589 INFO L226 Difference]: Without dead ends: 2042 [2021-11-12 23:51:07,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:51:07,591 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 78 mSDsluCounter, 8732 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 755.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 9829 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 866.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:07,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 9829 Invalid, 500 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [69 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 866.20ms Time] [2021-11-12 23:51:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-12 23:51:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2034. [2021-11-12 23:51:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 1565 states have (on average 1.8530351437699681) internal successors, (2900), 2015 states have internal predecessors, (2900), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-12 23:51:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2955 transitions. [2021-11-12 23:51:07,631 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2955 transitions. Word has length 72 [2021-11-12 23:51:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:07,631 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 2955 transitions. [2021-11-12 23:51:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:51:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2955 transitions. [2021-11-12 23:51:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:51:07,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:07,633 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:07,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:08,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-12 23:51:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:51:08,250 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-12 23:51:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1025165954, now seen corresponding path program 3 times [2021-11-12 23:51:08,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:08,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820879968] [2021-11-12 23:51:08,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:51:08,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:08,252 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:08,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:51:08,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:51:08,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:51:09,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:51:09,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:09,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:11,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:11,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820879968] [2021-11-12 23:51:11,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820879968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:51:11,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [387279089] [2021-11-12 23:51:11,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:51:11,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:51:11,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:51:11,078 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:51:11,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-12 23:51:17,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:51:17,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:51:17,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:51:17,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:17,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:18,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [387279089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:51:18,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450752631] [2021-11-12 23:51:18,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:51:18,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:51:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:51:18,501 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:51:18,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb64ab70-4ab5-474f-b4f8-8f290fe0bf35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process