./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 ........................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:26:31,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:26:31,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:26:32,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:26:32,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:26:32,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:26:32,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:26:32,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:26:32,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:26:32,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:26:32,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:26:32,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:26:32,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:26:32,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:26:32,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:26:32,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:26:32,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:26:32,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:26:32,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:26:32,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:26:32,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:26:32,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:26:32,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:26:32,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:26:32,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:26:32,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:26:32,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:26:32,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:26:32,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:26:32,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:26:32,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:26:32,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:26:32,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:26:32,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:26:32,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:26:32,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:26:32,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:26:32,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:26:32,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:26:32,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:26:32,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:26:32,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-29 05:26:32,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:26:32,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:26:32,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:26:32,228 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:26:32,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:26:32,228 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:26:32,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:26:32,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:26:32,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:26:32,229 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:26:32,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:26:32,231 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:26:32,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:26:32,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:26:32,232 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:26:32,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:26:32,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:26:32,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:26:32,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:26:32,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:26:32,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:26:32,235 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:26:32,235 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:26:32,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:26:32,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:26:32,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:26:32,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:26:32,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:26:32,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:26:32,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:32,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:26:32,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:26:32,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:26:32,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:26:32,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:26:32,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:26:32,240 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_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-10-29 05:26:32,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:26:32,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:26:32,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:26:32,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:26:32,748 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:26:32,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-29 05:26:32,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/190502569/364d97bac22e445bbeb32d1dfd7dafe7/FLAG09a28f701 [2021-10-29 05:26:33,740 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:26:33,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-29 05:26:33,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/190502569/364d97bac22e445bbeb32d1dfd7dafe7/FLAG09a28f701 [2021-10-29 05:26:33,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/190502569/364d97bac22e445bbeb32d1dfd7dafe7 [2021-10-29 05:26:33,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:26:33,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:26:33,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:33,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:26:33,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:26:33,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:33" (1/1) ... [2021-10-29 05:26:33,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458b1bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:33, skipping insertion in model container [2021-10-29 05:26:33,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:33" (1/1) ... [2021-10-29 05:26:33,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:26:34,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:34,707 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_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-29 05:26:34,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:34,781 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 05:26:34,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@170e3de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:34, skipping insertion in model container [2021-10-29 05:26:34,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:34,782 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:26:34,785 INFO L168 Benchmark]: Toolchain (without parser) took 889.20 ms. Allocated memory is still 123.7 MB. Free memory was 86.9 MB in the beginning and 89.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:26:34,786 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 50.4 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:26:34,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.66 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 89.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:26:34,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 50.4 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 885.66 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 89.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:26:37,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:26:37,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:26:37,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:26:37,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:26:37,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:26:37,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:26:37,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:26:37,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:26:37,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:26:37,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:26:37,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:26:37,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:26:37,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:26:37,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:26:37,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:26:37,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:26:37,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:26:37,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:26:37,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:26:37,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:26:37,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:26:37,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:26:37,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:26:37,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:26:37,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:26:37,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:26:37,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:26:37,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:26:37,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:26:37,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:26:37,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:26:37,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:26:37,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:26:37,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:26:37,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:26:37,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:26:37,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:26:37,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:26:37,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:26:37,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:26:37,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-10-29 05:26:38,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:26:38,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:26:38,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:26:38,008 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:26:38,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:26:38,009 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:26:38,009 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:26:38,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:26:38,010 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:26:38,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:26:38,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:26:38,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:26:38,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:26:38,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:26:38,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:26:38,015 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:26:38,015 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:26:38,016 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:26:38,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:26:38,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:26:38,017 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:26:38,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:26:38,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:26:38,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:26:38,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:26:38,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:26:38,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:38,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:26:38,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:26:38,020 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:26:38,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:26:38,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:26:38,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:26:38,021 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_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-10-29 05:26:38,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:26:38,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:26:38,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:26:38,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:26:38,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:26:38,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-29 05:26:38,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/46b546725/33e9139b33f14d90abb22e6da917a851/FLAG16f4f2680 [2021-10-29 05:26:39,549 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:26:39,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-29 05:26:39,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/46b546725/33e9139b33f14d90abb22e6da917a851/FLAG16f4f2680 [2021-10-29 05:26:39,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/data/46b546725/33e9139b33f14d90abb22e6da917a851 [2021-10-29 05:26:39,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:26:39,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:26:39,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:39,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:26:39,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:26:39,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:39" (1/1) ... [2021-10-29 05:26:39,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f2d73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:39, skipping insertion in model container [2021-10-29 05:26:39,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:39" (1/1) ... [2021-10-29 05:26:39,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:26:39,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:40,752 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_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-29 05:26:40,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:40,913 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:26:40,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:41,040 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_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-29 05:26:41,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:41,121 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:26:41,207 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_7105f925-3a47-4232-a285-984f02d1945d/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-29 05:26:41,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:41,442 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:26:41,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41 WrapperNode [2021-10-29 05:26:41,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:41,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:26:41,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:26:41,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:26:41,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:26:41,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:26:41,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:26:41,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:26:41,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:26:41,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:26:41,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:26:41,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:26:41,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (1/1) ... [2021-10-29 05:26:41,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:41,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:26:41,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:26:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:26:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-29 05:26:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:26:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:26:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:26:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-29 05:26:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:26:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:26:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:26:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-29 05:26:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:26:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-29 05:26:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:26:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:26:41,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:26:44,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:26:44,455 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-29 05:26:44,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:44 BoogieIcfgContainer [2021-10-29 05:26:44,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:26:44,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:26:44,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:26:44,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:26:44,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:26:39" (1/3) ... [2021-10-29 05:26:44,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b20b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:44, skipping insertion in model container [2021-10-29 05:26:44,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:41" (2/3) ... [2021-10-29 05:26:44,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b20b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:44, skipping insertion in model container [2021-10-29 05:26:44,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:44" (3/3) ... [2021-10-29 05:26:44,468 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-10-29 05:26:44,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:26:44,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-10-29 05:26:44,531 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:26:44,539 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 [2021-10-29 05:26:44,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-10-29 05:26:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:26:44,572 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:44,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:26:44,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:26:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-29 05:26:44,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:44,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273889297] [2021-10-29 05:26:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:44,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:44,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:44,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:26:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:44,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:26:44,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:45,100 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 [2021-10-29 05:26:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:45,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:45,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273889297] [2021-10-29 05:26:45,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273889297] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:45,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:45,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:26:45,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726643420] [2021-10-29 05:26:45,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:26:45,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:45,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:26:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:26:45,179 INFO L87 Difference]: Start difference. First operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:46,142 INFO L93 Difference]: Finished difference Result 255 states and 290 transitions. [2021-10-29 05:26:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:26:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-29 05:26:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:46,160 INFO L225 Difference]: With dead ends: 255 [2021-10-29 05:26:46,160 INFO L226 Difference]: Without dead ends: 253 [2021-10-29 05:26:46,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:26:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-29 05:26:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 237. [2021-10-29 05:26:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 145 states have (on average 1.8689655172413793) internal successors, (271), 236 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 271 transitions. [2021-10-29 05:26:46,246 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 271 transitions. Word has length 3 [2021-10-29 05:26:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:46,247 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-29 05:26:46,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 271 transitions. [2021-10-29 05:26:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:26:46,248 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:46,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:26:46,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:46,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:46,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:26:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-29 05:26:46,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:46,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71365673] [2021-10-29 05:26:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:46,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:46,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:46,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:26:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:46,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:26:46,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:46,776 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 [2021-10-29 05:26:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:46,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:46,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:46,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71365673] [2021-10-29 05:26:46,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71365673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:46,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:46,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:26:46,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467062790] [2021-10-29 05:26:46,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:26:46,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:26:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:47,001 INFO L87 Difference]: Start difference. First operand 237 states and 271 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-29 05:26:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:49,443 INFO L93 Difference]: Finished difference Result 236 states and 270 transitions. [2021-10-29 05:26:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:26:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-10-29 05:26:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:49,448 INFO L225 Difference]: With dead ends: 236 [2021-10-29 05:26:49,449 INFO L226 Difference]: Without dead ends: 236 [2021-10-29 05:26:49,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-29 05:26:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-29 05:26:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 145 states have (on average 1.8620689655172413) internal successors, (270), 235 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 270 transitions. [2021-10-29 05:26:49,468 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 270 transitions. Word has length 3 [2021-10-29 05:26:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:49,469 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 270 transitions. [2021-10-29 05:26:49,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-29 05:26:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 270 transitions. [2021-10-29 05:26:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:26:49,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:49,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:26:49,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:49,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:49,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:26:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-10-29 05:26:49,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:49,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94767765] [2021-10-29 05:26:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:49,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:49,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:49,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:26:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:50,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:26:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:50,031 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 [2021-10-29 05:26:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:50,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:50,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:50,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94767765] [2021-10-29 05:26:50,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94767765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:50,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:50,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-29 05:26:50,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639754373] [2021-10-29 05:26:50,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:26:50,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:26:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:26:50,707 INFO L87 Difference]: Start difference. First operand 236 states and 270 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:54,501 INFO L93 Difference]: Finished difference Result 249 states and 284 transitions. [2021-10-29 05:26:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:26:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 [2021-10-29 05:26:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:54,506 INFO L225 Difference]: With dead ends: 249 [2021-10-29 05:26:54,506 INFO L226 Difference]: Without dead ends: 249 [2021-10-29 05:26:54,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:26:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-29 05:26:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 242. [2021-10-29 05:26:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.8344370860927153) internal successors, (277), 241 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 277 transitions. [2021-10-29 05:26:54,525 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 277 transitions. Word has length 6 [2021-10-29 05:26:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 277 transitions. [2021-10-29 05:26:54,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 277 transitions. [2021-10-29 05:26:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:26:54,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:54,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:54,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:54,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:54,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:26:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash 462405445, now seen corresponding path program 1 times [2021-10-29 05:26:54,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:54,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915841024] [2021-10-29 05:26:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:54,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:54,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:54,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:54,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:26:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:55,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:26:55,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:55,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:55,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:55,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915841024] [2021-10-29 05:26:55,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915841024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:26:55,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1099521787] [2021-10-29 05:26:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:55,188 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:26:55,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:26:55,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:26:55,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-29 05:26:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:55,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:26:55,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:55,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1099521787] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:26:55,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930006556] [2021-10-29 05:26:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:55,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:26:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:26:55,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:26:55,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 05:26:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:56,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:26:56,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:56,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:56,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930006556] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:26:56,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:26:56,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-29 05:26:56,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884379855] [2021-10-29 05:26:56,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:26:56,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:26:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:26:56,136 INFO L87 Difference]: Start difference. First operand 242 states and 277 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:56,264 INFO L93 Difference]: Finished difference Result 250 states and 284 transitions. [2021-10-29 05:26:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:26:56,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 [2021-10-29 05:26:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:56,275 INFO L225 Difference]: With dead ends: 250 [2021-10-29 05:26:56,275 INFO L226 Difference]: Without dead ends: 250 [2021-10-29 05:26:56,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:26:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-29 05:26:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-10-29 05:26:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 158 states have (on average 1.7974683544303798) internal successors, (284), 248 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-10-29 05:26:56,314 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 11 [2021-10-29 05:26:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:56,315 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-10-29 05:26:56,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-10-29 05:26:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:26:56,316 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:56,316 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-29 05:26:56,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-29 05:26:56,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:56,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:56,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:26:56,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:26:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-10-29 05:26:56,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:56,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382686831] [2021-10-29 05:26:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:56,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:56,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:56,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:26:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:57,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:26:57,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:57,239 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 [2021-10-29 05:26:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:57,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:00,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:00,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382686831] [2021-10-29 05:27:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382686831] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:00,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1516563264] [2021-10-29 05:27:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:00,759 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:27:00,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:27:00,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:27:00,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-29 05:27:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:01,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:27:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:01,528 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 [2021-10-29 05:27:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:01,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:03,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1516563264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:03,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578031299] [2021-10-29 05:27:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:03,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:03,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:27:03,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 05:27:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:03,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:27:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:03,335 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 [2021-10-29 05:27:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:03,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:04,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578031299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:04,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:27:04,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-29 05:27:04,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506384875] [2021-10-29 05:27:04,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:27:04,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:27:04,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:27:04,652 INFO L87 Difference]: Start difference. First operand 249 states and 284 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:13,881 INFO L93 Difference]: Finished difference Result 252 states and 286 transitions. [2021-10-29 05:27:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:27:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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 14 [2021-10-29 05:27:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:13,885 INFO L225 Difference]: With dead ends: 252 [2021-10-29 05:27:13,885 INFO L226 Difference]: Without dead ends: 252 [2021-10-29 05:27:13,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:27:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-29 05:27:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-29 05:27:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 162 states have (on average 1.7654320987654322) internal successors, (286), 251 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 286 transitions. [2021-10-29 05:27:13,897 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 286 transitions. Word has length 14 [2021-10-29 05:27:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:13,897 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 286 transitions. [2021-10-29 05:27:13,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 286 transitions. [2021-10-29 05:27:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 05:27:13,899 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:13,899 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:13,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-29 05:27:14,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:14,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-29 05:27:14,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:14,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-29 05:27:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -406298695, now seen corresponding path program 2 times [2021-10-29 05:27:14,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:14,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170236985] [2021-10-29 05:27:14,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:27:14,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:14,521 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:14,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:27:14,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-29 05:27:14,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:27:14,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:27:14,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:16,557 INFO L354 Elim1Store]: treesize reduction 1465, result has 7.6 percent of original size [2021-10-29 05:27:16,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 11 case distinctions, treesize of input 138 treesize of output 221 [2021-10-29 05:27:37,619 INFO L354 Elim1Store]: treesize reduction 535, result has 29.3 percent of original size [2021-10-29 05:27:37,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 182 treesize of output 378 [2021-10-29 05:32:29,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-29 05:32:29,833 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-29 05:32:29,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:29,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170236985] [2021-10-29 05:32:29,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-29 05:32:29,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [649055887] [2021-10-29 05:32:29,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:32:29,835 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:32:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:32:29,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:32:29,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-29 05:32:30,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-29 05:32:30,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:32:30,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:32:30,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:30,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:32:30,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154272476] [2021-10-29 05:32:30,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:32:30,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:32:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:32:30,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:32:30,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 05:32:31,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-29 05:32:31,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:32:31,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:32:31,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:31,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:32:31,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:31,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:32:31,183 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:32:31,183 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:32:31,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:32:31,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:32:31,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:32:31,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:32:31,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:32:31,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:32:31,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:32:31,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:32:31,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-29 05:32:31,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-29 05:32:31,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 05:32:31,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 05:32:31,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-29 05:32:31,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-29 05:32:31,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-29 05:32:31,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-29 05:32:31,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-29 05:32:31,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-29 05:32:31,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-29 05:32:31,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-29 05:32:31,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-29 05:32:31,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-29 05:32:31,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-29 05:32:31,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-29 05:32:31,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-29 05:32:31,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-29 05:32:31,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-29 05:32:31,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-29 05:32:31,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-29 05:32:31,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-29 05:32:31,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-29 05:32:31,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-29 05:32:31,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-29 05:32:31,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-29 05:32:31,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-29 05:32:31,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-29 05:32:31,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-29 05:32:31,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-29 05:32:31,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:32:31,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-29 05:32:31,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-29 05:32:31,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-29 05:32:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-29 05:32:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-29 05:32:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-29 05:32:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-29 05:32:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-29 05:32:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-29 05:32:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-29 05:32:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION [2021-10-29 05:32:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-29 05:32:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-29 05:32:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION [2021-10-29 05:32:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION [2021-10-29 05:32:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-29 05:32:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-29 05:32:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-29 05:32:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION [2021-10-29 05:32:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION [2021-10-29 05:32:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-29 05:32:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75REQUIRES_VIOLATION [2021-10-29 05:32:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76REQUIRES_VIOLATION [2021-10-29 05:32:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATION [2021-10-29 05:32:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION [2021-10-29 05:32:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION [2021-10-29 05:32:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATION [2021-10-29 05:32:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:32:31,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:31,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:31,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:31,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7105f925-3a47-4232-a285-984f02d1945d/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:31,838 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-10-29 05:32:31,845 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:32:31,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:32:31 BoogieIcfgContainer [2021-10-29 05:32:31,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:32:31,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:32:31,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:32:31,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:32:31,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:44" (3/4) ... [2021-10-29 05:32:31,877 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:32:31,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:32:31,878 INFO L168 Benchmark]: Toolchain (without parser) took 352241.29 ms. Allocated memory was 48.2 MB in the beginning and 163.6 MB in the end (delta: 115.3 MB). Free memory was 30.9 MB in the beginning and 96.3 MB in the end (delta: -65.4 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,879 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 48.2 MB. Free memory is still 28.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:31,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1804.15 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 30.6 MB in the beginning and 38.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 165.95 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 34.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,881 INFO L168 Benchmark]: Boogie Preprocessor took 121.18 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 29.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,882 INFO L168 Benchmark]: RCFGBuilder took 2725.76 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 43.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,883 INFO L168 Benchmark]: TraceAbstraction took 347407.95 ms. Allocated memory was 75.5 MB in the beginning and 163.6 MB in the end (delta: 88.1 MB). Free memory was 43.3 MB in the beginning and 97.3 MB in the end (delta: -54.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:31,887 INFO L168 Benchmark]: Witness Printer took 6.08 ms. Allocated memory is still 163.6 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:31,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 48.2 MB. Free memory is still 28.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1804.15 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 30.6 MB in the beginning and 38.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 165.95 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 34.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.18 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 29.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2725.76 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 43.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 347407.95 ms. Allocated memory was 75.5 MB in the beginning and 163.6 MB in the end (delta: 88.1 MB). Free memory was 43.3 MB in the beginning and 97.3 MB in the end (delta: -54.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.08 ms. Allocated memory is still 163.6 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1318] static const char *applet_name; [L1319] static signed int bb_errno_location; [L1320] static signed int * const bb_errno = &bb_errno_location; [L1512] static struct utmp dummy_utmp; [L1594] char *a = malloc(11); [L1595] a[10] = 0 [L1596] int i=0; [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND FALSE !(i<10) [L1598] applet_name = a [L1599] bb_errno_location = __VERIFIER_nondet_int() - UnprovableResult [Line: 1595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1334]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1334]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1354]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1354]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1396]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1396]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1484]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1484]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1491]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1491]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1432]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1432]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1400]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1400]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1416]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1416]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1505]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1505]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 241 locations, 94 error locations. Started 1 CEGAR loops. OverallTime: 347.3s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1238 SDtfs, 408 SDslu, 1942 SDs, 0 SdLazy, 879 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 322.8s InterpolantComputationTime, 114 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1596 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1090 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...