./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:10:16,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:10:16,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:10:16,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:10:16,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:10:16,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:10:16,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:10:16,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:10:16,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:10:16,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:10:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:10:16,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:10:16,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:10:16,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:10:16,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:10:16,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:10:16,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:10:16,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:10:16,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:10:16,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:10:16,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:10:16,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:10:16,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:10:16,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:10:16,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:10:16,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:10:16,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:10:16,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:10:16,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:10:16,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:10:16,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:10:16,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:10:16,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:10:16,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:10:16,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:10:16,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:10:16,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:10:16,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:10:16,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:10:16,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:10:16,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:10:16,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:10:16,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:10:16,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:10:16,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:10:16,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:10:16,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:10:16,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:10:16,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:10:16,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:10:16,759 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:10:16,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:10:16,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:10:16,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:10:16,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:10:16,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:10:16,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:10:16,761 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:10:16,761 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:10:16,761 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:10:16,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:10:16,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:10:16,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:10:16,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:10:16,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:10:16,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:10:16,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:10:16,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:16,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:10:16,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:10:16,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:10:16,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:10:16,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:10:16,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-11-20 07:10:17,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:10:17,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:10:17,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:10:17,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:10:17,025 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:10:17,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-20 07:10:17,111 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/2aa7a8e10/a089ed0cda864569b47986ae2adebb74/FLAG5aabf322b [2021-11-20 07:10:17,648 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:10:17,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-20 07:10:17,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/2aa7a8e10/a089ed0cda864569b47986ae2adebb74/FLAG5aabf322b [2021-11-20 07:10:17,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/2aa7a8e10/a089ed0cda864569b47986ae2adebb74 [2021-11-20 07:10:17,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:10:17,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:10:17,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:17,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:10:17,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:10:17,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:17" (1/1) ... [2021-11-20 07:10:17,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70252dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:17, skipping insertion in model container [2021-11-20 07:10:17,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:17" (1/1) ... [2021-11-20 07:10:17,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:10:18,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:18,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:18,386 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 07:10:18,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f803827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:18, skipping insertion in model container [2021-11-20 07:10:18,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:18,388 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:10:18,391 INFO L158 Benchmark]: Toolchain (without parser) took 430.89ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 63.8MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:10:18,392 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 71.3MB. Free memory is still 29.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:10:18,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.41ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 63.8MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:10:18,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 71.3MB. Free memory is still 29.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.41ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 63.8MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:10:20,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:10:20,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:10:20,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:10:20,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:10:20,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:10:20,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:10:20,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:10:20,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:10:20,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:10:20,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:10:20,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:10:20,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:10:20,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:10:20,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:10:20,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:10:20,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:10:20,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:10:20,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:10:20,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:10:20,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:10:20,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:10:20,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:10:20,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:10:20,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:10:20,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:10:20,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:10:20,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:10:20,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:10:20,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:10:20,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:10:20,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:10:20,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:10:20,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:10:20,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:10:20,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:10:20,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:10:20,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:10:20,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:10:20,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:10:20,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:10:20,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:10:20,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:10:20,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:10:20,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:10:20,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:10:20,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:10:20,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:10:20,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:10:20,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:10:20,864 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:10:20,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:10:20,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:10:20,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:10:20,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:10:20,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:10:20,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:10:20,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:10:20,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:10:20,867 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:10:20,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:10:20,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:10:20,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:10:20,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:10:20,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:10:20,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:10:20,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:10:20,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:10:20,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:10:20,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:20,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:10:20,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:10:20,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:10:20,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:10:20,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:10:20,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:10:20,872 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_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-11-20 07:10:21,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:10:21,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:10:21,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:10:21,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:10:21,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:10:21,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-20 07:10:21,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/1f3bc3b46/a8e728da80bd4cafb993ffdb0570aa39/FLAG5fa9fd976 [2021-11-20 07:10:21,970 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:10:21,971 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-20 07:10:21,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/1f3bc3b46/a8e728da80bd4cafb993ffdb0570aa39/FLAG5fa9fd976 [2021-11-20 07:10:22,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/data/1f3bc3b46/a8e728da80bd4cafb993ffdb0570aa39 [2021-11-20 07:10:22,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:10:22,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:10:22,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:22,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:10:22,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:10:22,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:22,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570dd997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22, skipping insertion in model container [2021-11-20 07:10:22,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:22,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:10:22,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:22,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:22,737 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:10:22,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:22,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:22,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:10:22,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:22,958 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:10:22,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22 WrapperNode [2021-11-20 07:10:22,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:22,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:22,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:10:22,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:10:22,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,038 INFO L137 Inliner]: procedures = 136, calls = 38, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2021-11-20 07:10:23,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:23,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:10:23,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:10:23,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:10:23,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:10:23,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:10:23,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:10:23,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:10:23,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (1/1) ... [2021-11-20 07:10:23,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:23,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:10:23,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:10:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 07:10:23,212 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 07:10:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:10:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:10:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2021-11-20 07:10:23,212 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2021-11-20 07:10:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:10:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:10:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:10:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2021-11-20 07:10:23,213 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2021-11-20 07:10:23,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:10:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:10:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:10:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:10:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:10:23,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:10:23,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:10:23,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:10:23,755 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:10:23,766 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:10:23,771 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 07:10:23,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:23 BoogieIcfgContainer [2021-11-20 07:10:23,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:10:23,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:10:23,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:10:23,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:10:23,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:10:22" (1/3) ... [2021-11-20 07:10:23,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630f87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:23, skipping insertion in model container [2021-11-20 07:10:23,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:22" (2/3) ... [2021-11-20 07:10:23,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630f87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:23, skipping insertion in model container [2021-11-20 07:10:23,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:23" (3/3) ... [2021-11-20 07:10:23,784 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2021-11-20 07:10:23,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:10:23,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-20 07:10:23,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:10:23,864 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:10:23,864 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-20 07:10:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:10:23,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:23,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:10:23,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 106012329, now seen corresponding path program 1 times [2021-11-20 07:10:23,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:23,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62106096] [2021-11-20 07:10:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:23,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:23,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:23,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:10:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:24,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:10:24,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:24,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:24,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:24,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62106096] [2021-11-20 07:10:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62106096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:24,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:24,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:10:24,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159312044] [2021-11-20 07:10:24,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:24,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:10:24,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:10:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:10:24,159 INFO L87 Difference]: Start difference. First operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:24,188 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-11-20 07:10:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:10:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 07:10:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:24,201 INFO L225 Difference]: With dead ends: 87 [2021-11-20 07:10:24,201 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:10:24,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:10:24,207 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:24,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:10:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:10:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-20 07:10:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 75 states have internal predecessors, (79), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-11-20 07:10:24,252 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 5 [2021-11-20 07:10:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:24,252 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-11-20 07:10:24,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-11-20 07:10:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:10:24,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:24,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:24,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:24,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:24,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357814, now seen corresponding path program 1 times [2021-11-20 07:10:24,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834304253] [2021-11-20 07:10:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:24,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:24,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:24,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:24,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:10:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:24,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:10:24,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:24,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:24,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:24,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:24,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834304253] [2021-11-20 07:10:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834304253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:24,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:24,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:10:24,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039636677] [2021-11-20 07:10:24,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:10:24,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:10:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:10:24,788 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:25,147 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-11-20 07:10:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:10:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:10:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:25,150 INFO L225 Difference]: With dead ends: 91 [2021-11-20 07:10:25,151 INFO L226 Difference]: Without dead ends: 91 [2021-11-20 07:10:25,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:10:25,153 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:25,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 190 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:10:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-20 07:10:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2021-11-20 07:10:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.711111111111111) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-11-20 07:10:25,166 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 7 [2021-11-20 07:10:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:25,167 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-11-20 07:10:25,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-11-20 07:10:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:10:25,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:25,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:25,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 07:10:25,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:25,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357813, now seen corresponding path program 1 times [2021-11-20 07:10:25,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:25,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332626546] [2021-11-20 07:10:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:25,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:25,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:25,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:10:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:25,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:10:25,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:25,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:25,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:25,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:25,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332626546] [2021-11-20 07:10:25,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332626546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:25,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:25,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:10:25,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718192855] [2021-11-20 07:10:25,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:10:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:10:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:10:25,849 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:26,573 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2021-11-20 07:10:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:10:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:10:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:26,593 INFO L225 Difference]: With dead ends: 88 [2021-11-20 07:10:26,594 INFO L226 Difference]: Without dead ends: 88 [2021-11-20 07:10:26,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:10:26,604 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:26,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 427 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:10:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-20 07:10:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-11-20 07:10:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-11-20 07:10:26,625 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2021-11-20 07:10:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:26,625 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-11-20 07:10:26,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-11-20 07:10:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:10:26,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:26,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:26,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 07:10:26,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:26,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -778231822, now seen corresponding path program 1 times [2021-11-20 07:10:26,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255778528] [2021-11-20 07:10:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:26,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:26,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:26,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:10:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:26,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:10:26,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:26,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:26,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:26,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:26,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255778528] [2021-11-20 07:10:26,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255778528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:26,993 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:26,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:10:26,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519723634] [2021-11-20 07:10:26,994 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:26,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:10:26,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:10:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:10:26,996 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:27,117 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2021-11-20 07:10:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:10:27,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:10:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:27,118 INFO L225 Difference]: With dead ends: 86 [2021-11-20 07:10:27,118 INFO L226 Difference]: Without dead ends: 86 [2021-11-20 07:10:27,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:10:27,120 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:27,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:10:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-20 07:10:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-11-20 07:10:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-11-20 07:10:27,131 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 11 [2021-11-20 07:10:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:27,131 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-11-20 07:10:27,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-11-20 07:10:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:10:27,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:27,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:27,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:27,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -778231821, now seen corresponding path program 1 times [2021-11-20 07:10:27,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:27,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119866255] [2021-11-20 07:10:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:27,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:27,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:27,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:10:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:27,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:10:27,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:27,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:27,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:27,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:27,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119866255] [2021-11-20 07:10:27,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119866255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:27,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:27,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:10:27,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25820903] [2021-11-20 07:10:27,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:27,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:27,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:27,576 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:27,836 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-11-20 07:10:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:10:27,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:10:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:27,853 INFO L225 Difference]: With dead ends: 85 [2021-11-20 07:10:27,853 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:10:27,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:27,854 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:27,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 187 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:10:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:10:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-11-20 07:10:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.625) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:10:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2021-11-20 07:10:27,863 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 11 [2021-11-20 07:10:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:27,864 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2021-11-20 07:10:27,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2021-11-20 07:10:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:10:27,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:27,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:27,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:28,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:28,084 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr1REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:28,084 INFO L85 PathProgramCache]: Analyzing trace with hash -70636768, now seen corresponding path program 1 times [2021-11-20 07:10:28,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:28,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520770336] [2021-11-20 07:10:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:28,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:28,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:10:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:28,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:10:28,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:28,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:28,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:28,380 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:10:28,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-20 07:10:28,389 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:10:28,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-11-20 07:10:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:28,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:33,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520770336] [2021-11-20 07:10:33,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520770336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:33,771 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:33,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 07:10:33,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828643083] [2021-11-20 07:10:33,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:33,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:10:33,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:10:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=150, Unknown=1, NotChecked=0, Total=182 [2021-11-20 07:10:33,773 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:34,689 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-11-20 07:10:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:10:34,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 07:10:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:34,691 INFO L225 Difference]: With dead ends: 95 [2021-11-20 07:10:34,691 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 07:10:34,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-11-20 07:10:34,693 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 9 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:34,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 646 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 252 Unchecked, 0.8s Time] [2021-11-20 07:10:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 07:10:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-11-20 07:10:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 81 states have internal predecessors, (88), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-20 07:10:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2021-11-20 07:10:34,702 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 14 [2021-11-20 07:10:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:34,702 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2021-11-20 07:10:34,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2021-11-20 07:10:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:10:34,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:34,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:34,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 07:10:34,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:34,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -70636769, now seen corresponding path program 1 times [2021-11-20 07:10:34,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:34,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995416553] [2021-11-20 07:10:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:34,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:34,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:34,919 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:10:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:35,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:10:35,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:35,148 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:10:35,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-20 07:10:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:35,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:35,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995416553] [2021-11-20 07:10:35,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995416553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:35,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:35,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-20 07:10:35,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644750122] [2021-11-20 07:10:35,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:35,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:10:35,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:10:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:10:35,520 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:36,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:36,200 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2021-11-20 07:10:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:10:36,201 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 07:10:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:36,203 INFO L225 Difference]: With dead ends: 121 [2021-11-20 07:10:36,203 INFO L226 Difference]: Without dead ends: 121 [2021-11-20 07:10:36,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:10:36,204 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 83 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:36,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 285 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 49 Unchecked, 0.5s Time] [2021-11-20 07:10:36,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-20 07:10:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2021-11-20 07:10:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.6153846153846154) internal successors, (105), 90 states have internal predecessors, (105), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-20 07:10:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-11-20 07:10:36,213 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 14 [2021-11-20 07:10:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:36,214 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-11-20 07:10:36,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-11-20 07:10:36,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:10:36,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:36,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:36,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:36,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:36,427 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 837542848, now seen corresponding path program 1 times [2021-11-20 07:10:36,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:36,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980262220] [2021-11-20 07:10:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:36,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:36,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:36,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:36,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:10:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:36,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:10:36,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:36,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:36,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980262220] [2021-11-20 07:10:36,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980262220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:36,609 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:36,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:10:36,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517385544] [2021-11-20 07:10:36,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:36,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:36,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:36,610 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:36,812 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2021-11-20 07:10:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:36,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:10:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:36,815 INFO L225 Difference]: With dead ends: 103 [2021-11-20 07:10:36,815 INFO L226 Difference]: Without dead ends: 103 [2021-11-20 07:10:36,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:10:36,816 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:36,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:10:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-20 07:10:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-20 07:10:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-20 07:10:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2021-11-20 07:10:36,839 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 16 [2021-11-20 07:10:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2021-11-20 07:10:36,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2021-11-20 07:10:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:10:36,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:36,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:36,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:37,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:37,041 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 837542849, now seen corresponding path program 1 times [2021-11-20 07:10:37,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:37,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415843958] [2021-11-20 07:10:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:37,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:37,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:10:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:37,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 07:10:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:37,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:37,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 07:10:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:38,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:38,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415843958] [2021-11-20 07:10:38,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415843958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:38,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:38,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-20 07:10:38,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670431549] [2021-11-20 07:10:38,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:38,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:10:38,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:10:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:10:38,008 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:40,235 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2021-11-20 07:10:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:10:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:10:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:40,238 INFO L225 Difference]: With dead ends: 136 [2021-11-20 07:10:40,238 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 07:10:40,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:10:40,240 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 225 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:40,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 800 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:10:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 07:10:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2021-11-20 07:10:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 101 states have internal predecessors, (120), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 07:10:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2021-11-20 07:10:40,248 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 16 [2021-11-20 07:10:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:40,248 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2021-11-20 07:10:40,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2021-11-20 07:10:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:10:40,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:40,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:40,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 07:10:40,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:40,461 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 194024551, now seen corresponding path program 1 times [2021-11-20 07:10:40,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620999969] [2021-11-20 07:10:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:40,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:40,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:40,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:40,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:10:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:10:40,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:40,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:40,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:40,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:40,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620999969] [2021-11-20 07:10:40,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620999969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:40,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:40,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 07:10:40,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915778141] [2021-11-20 07:10:40,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:40,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:10:40,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:10:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:10:40,727 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:41,122 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-11-20 07:10:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:10:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 07:10:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:41,124 INFO L225 Difference]: With dead ends: 121 [2021-11-20 07:10:41,124 INFO L226 Difference]: Without dead ends: 121 [2021-11-20 07:10:41,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:10:41,125 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 46 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:41,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 246 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:10:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-20 07:10:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2021-11-20 07:10:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 100 states have internal predecessors, (115), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 07:10:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2021-11-20 07:10:41,132 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 17 [2021-11-20 07:10:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:41,132 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2021-11-20 07:10:41,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2021-11-20 07:10:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:10:41,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:41,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:41,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:41,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:41,343 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash 194024552, now seen corresponding path program 1 times [2021-11-20 07:10:41,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:41,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429503583] [2021-11-20 07:10:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:41,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:41,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:41,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:10:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:41,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:10:41,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:41,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:41,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:42,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429503583] [2021-11-20 07:10:42,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429503583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:42,040 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:42,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 07:10:42,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448885288] [2021-11-20 07:10:42,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:42,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:42,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:10:42,042 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:43,082 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-11-20 07:10:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:10:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 07:10:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:43,084 INFO L225 Difference]: With dead ends: 119 [2021-11-20 07:10:43,084 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 07:10:43,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:10:43,085 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 44 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:43,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 412 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:10:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 07:10:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-11-20 07:10:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 100 states have internal predecessors, (111), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 07:10:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2021-11-20 07:10:43,092 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 17 [2021-11-20 07:10:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:43,093 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2021-11-20 07:10:43,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2021-11-20 07:10:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:10:43,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:43,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:43,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:43,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:43,307 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:10:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001130, now seen corresponding path program 1 times [2021-11-20 07:10:43,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:43,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101700285] [2021-11-20 07:10:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:43,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:43,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:43,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:10:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:43,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 07:10:43,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:43,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:43,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:10:43,645 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 07:10:43,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:10:43,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:10:43,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-20 07:10:43,948 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-11-20 07:10:43,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-11-20 07:10:44,127 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:10:44,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-20 07:10:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:44,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:44,356 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-11-20 07:10:44,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 07:10:50,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_17|)))) (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_17| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_17|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:10:52,969 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_17|)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_17| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_17|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:10:53,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:53,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101700285] [2021-11-20 07:10:53,187 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:10:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638959047] [2021-11-20 07:10:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:53,188 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:10:53,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:10:53,190 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:10:53,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-20 07:10:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:53,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 07:10:53,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:53,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:10:53,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:10:53,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:53,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:10:53,883 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:10:53,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-20 07:10:54,096 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:10:54,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 25 [2021-11-20 07:10:54,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:10:54,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-20 07:10:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:54,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:54,449 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-11-20 07:10:54,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 07:11:06,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))))) is different from false [2021-11-20 07:11:08,836 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))))) is different from false [2021-11-20 07:11:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:09,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1638959047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:09,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:09,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 21 [2021-11-20 07:11:09,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396658221] [2021-11-20 07:11:09,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:09,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 07:11:09,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:11:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 07:11:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=571, Unknown=6, NotChecked=204, Total=870 [2021-11-20 07:11:09,034 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:11,213 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv8 32) |c_create_sub_list_~sub#1.offset|) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_create_sub_list_#in~sub#1.base|))))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_create_sub_list_~sub#1.base|))))) (_ bv1 1))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))))) (= (select (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|) (= |c_create_sub_list_#in~sub#1.offset| (_ bv8 32))) is different from false [2021-11-20 07:11:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:40,522 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2021-11-20 07:11:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:11:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 07:11:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:40,524 INFO L225 Difference]: With dead ends: 122 [2021-11-20 07:11:40,524 INFO L226 Difference]: Without dead ends: 122 [2021-11-20 07:11:40,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=154, Invalid=915, Unknown=7, NotChecked=330, Total=1406 [2021-11-20 07:11:40,526 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 38 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:40,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 775 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 466 Invalid, 0 Unknown, 147 Unchecked, 1.0s Time] [2021-11-20 07:11:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-20 07:11:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-11-20 07:11:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 105 states have internal predecessors, (117), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 07:11:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-11-20 07:11:40,532 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 19 [2021-11-20 07:11:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:40,532 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-11-20 07:11:40,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-11-20 07:11:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:11:40,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:40,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:40,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-20 07:11:40,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:40,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:11:40,939 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:11:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:40,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001131, now seen corresponding path program 1 times [2021-11-20 07:11:40,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:11:40,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747802497] [2021-11-20 07:11:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:40,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:11:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:11:40,941 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:11:40,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:11:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:41,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-20 07:11:41,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:41,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:11:41,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:11:41,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:11:41,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:11:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:11:41,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:11:41,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:11:41,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:11:41,491 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:11:41,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-20 07:11:41,523 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:11:41,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-20 07:11:41,780 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:11:41,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:11:41,913 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:11:41,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:11:42,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:11:42,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-11-20 07:11:42,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:11:42,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 07:11:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:42,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:15,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_19|)))) (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_15) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse4 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse6 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) .cse3 v_DerPreprocessor_14) .cse4 v_DerPreprocessor_15) .cse5 v_DerPreprocessor_16))) |c_create_sub_list_~sub#1.base|) .cse6)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_9) .cse3 v_DerPreprocessor_10) .cse4 v_DerPreprocessor_11) .cse5 v_DerPreprocessor_12))) |c_create_sub_list_~sub#1.base|) .cse6)))))))) is different from false [2021-11-20 07:12:15,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:12:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747802497] [2021-11-20 07:12:15,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:12:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [844479207] [2021-11-20 07:12:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:15,791 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:12:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:12:15,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:12:15,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-20 07:12:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:16,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 07:12:16,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:16,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:12:16,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:12:16,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:12:16,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:12:16,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:12:16,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:12:16,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:12:16,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:12:16,292 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:12:16,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-20 07:12:16,319 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 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 07:12:16,594 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:12:16,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:12:16,728 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:12:16,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:12:16,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:12:16,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:12:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:17,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:19,684 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_22) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_23) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_24)) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd |c_create_sub_list_insert_sub_~head#1.offset| (_ bv4 32))))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse4 (bvadd |c_create_sub_list_insert_sub_~head#1.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) .cse1 v_DerPreprocessor_22) .cse2 v_DerPreprocessor_23) .cse3 v_DerPreprocessor_24)) |c_create_sub_list_insert_sub_~head#1.base|) .cse4) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20)) |c_create_sub_list_insert_sub_~head#1.base|) .cse4)))))) is different from false [2021-11-20 07:12:21,910 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ BitVec 32))) (or (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_22) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_23) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_24)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse4 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) .cse1 v_DerPreprocessor_22) .cse2 v_DerPreprocessor_23) .cse3 v_DerPreprocessor_24)) |c_create_sub_list_~sub#1.base|) .cse4)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20)) |c_create_sub_list_~sub#1.base|) .cse4)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_20|)))))))))) is different from false [2021-11-20 07:12:24,143 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ BitVec 32))) (or (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_22) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_23) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_24))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse4 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse6 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) .cse3 v_DerPreprocessor_22) .cse4 v_DerPreprocessor_23) .cse5 v_DerPreprocessor_24))) |c_create_sub_list_~sub#1.base|) .cse6)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_17) .cse3 v_DerPreprocessor_18) .cse4 v_DerPreprocessor_19) .cse5 v_DerPreprocessor_20))) |c_create_sub_list_~sub#1.base|) .cse6)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_20|)))))))))) is different from false [2021-11-20 07:12:24,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:12:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135849019] [2021-11-20 07:12:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:24,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:24,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:24,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:24,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:12:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 07:12:24,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:24,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:12:27,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:12:27,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:12:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:12:27,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:12:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:12:27,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:12:27,320 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:12:27,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-20 07:12:27,351 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:12:27,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-20 07:12:27,541 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:12:27,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:12:27,641 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:12:27,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:12:27,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:12:27,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:12:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:27,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:44,602 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_21| (_ BitVec 32))) (or (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse0 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse3 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) .cse0 v_DerPreprocessor_30) .cse1 v_DerPreprocessor_31) .cse2 v_DerPreprocessor_32)) |c_create_sub_list_~sub#1.base|) .cse3)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_25) .cse0 v_DerPreprocessor_26) .cse1 v_DerPreprocessor_27) .cse2 v_DerPreprocessor_28)) |c_create_sub_list_~sub#1.base|) .cse3))))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_30) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_31) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_32)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_21|))))))) is different from false [2021-11-20 07:12:52,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:12:53,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:12:55,346 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:12:55,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 601569 treesize of output 601568 [2021-11-20 07:12:58,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:12:58,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:58,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 07:12:58,934 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-20 07:12:58,935 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 07:12:58,941 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr9REQUIRES_VIOLATION (30 of 31 remaining) [2021-11-20 07:12:58,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr0REQUIRES_VIOLATION (29 of 31 remaining) [2021-11-20 07:12:58,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr1REQUIRES_VIOLATION (28 of 31 remaining) [2021-11-20 07:12:58,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr2REQUIRES_VIOLATION (27 of 31 remaining) [2021-11-20 07:12:58,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr3REQUIRES_VIOLATION (26 of 31 remaining) [2021-11-20 07:12:58,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr4REQUIRES_VIOLATION (25 of 31 remaining) [2021-11-20 07:12:58,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr5REQUIRES_VIOLATION (24 of 31 remaining) [2021-11-20 07:12:58,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr0REQUIRES_VIOLATION (23 of 31 remaining) [2021-11-20 07:12:58,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr1REQUIRES_VIOLATION (22 of 31 remaining) [2021-11-20 07:12:58,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr2REQUIRES_VIOLATION (21 of 31 remaining) [2021-11-20 07:12:58,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr3REQUIRES_VIOLATION (20 of 31 remaining) [2021-11-20 07:12:58,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr4ASSERT_VIOLATIONMEMORY_FREE (19 of 31 remaining) [2021-11-20 07:12:58,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr5ASSERT_VIOLATIONMEMORY_FREE (18 of 31 remaining) [2021-11-20 07:12:58,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr6ASSERT_VIOLATIONMEMORY_FREE (17 of 31 remaining) [2021-11-20 07:12:58,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr0REQUIRES_VIOLATION (16 of 31 remaining) [2021-11-20 07:12:58,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr1REQUIRES_VIOLATION (15 of 31 remaining) [2021-11-20 07:12:58,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr2REQUIRES_VIOLATION (14 of 31 remaining) [2021-11-20 07:12:58,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr3REQUIRES_VIOLATION (13 of 31 remaining) [2021-11-20 07:12:58,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr4REQUIRES_VIOLATION (12 of 31 remaining) [2021-11-20 07:12:58,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr5REQUIRES_VIOLATION (11 of 31 remaining) [2021-11-20 07:12:58,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr6REQUIRES_VIOLATION (10 of 31 remaining) [2021-11-20 07:12:58,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr7REQUIRES_VIOLATION (9 of 31 remaining) [2021-11-20 07:12:58,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr8REQUIRES_VIOLATION (8 of 31 remaining) [2021-11-20 07:12:58,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (7 of 31 remaining) [2021-11-20 07:12:58,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (6 of 31 remaining) [2021-11-20 07:12:58,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (5 of 31 remaining) [2021-11-20 07:12:58,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (4 of 31 remaining) [2021-11-20 07:12:58,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (3 of 31 remaining) [2021-11-20 07:12:58,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (2 of 31 remaining) [2021-11-20 07:12:58,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (1 of 31 remaining) [2021-11-20 07:12:58,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2021-11-20 07:12:58,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 07:12:59,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:59,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:59,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:59,577 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:59,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:12:59,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:12:59 BoogieIcfgContainer [2021-11-20 07:12:59,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:12:59,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:12:59,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:12:59,597 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:12:59,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:23" (3/4) ... [2021-11-20 07:12:59,600 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:12:59,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:12:59,601 INFO L158 Benchmark]: Toolchain (without parser) took 157368.48ms. Allocated memory was 77.6MB in the beginning and 234.9MB in the end (delta: 157.3MB). Free memory was 56.6MB in the beginning and 141.5MB in the end (delta: -84.8MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,601 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.2MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:12:59,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.46ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 49.1MB in the end (delta: 7.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.64ms. Allocated memory is still 77.6MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,602 INFO L158 Benchmark]: Boogie Preprocessor took 79.85ms. Allocated memory is still 77.6MB. Free memory was 46.8MB in the beginning and 44.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,603 INFO L158 Benchmark]: RCFGBuilder took 654.29ms. Allocated memory is still 77.6MB. Free memory was 44.7MB in the beginning and 53.3MB in the end (delta: -8.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,604 INFO L158 Benchmark]: TraceAbstraction took 155819.52ms. Allocated memory was 77.6MB in the beginning and 234.9MB in the end (delta: 157.3MB). Free memory was 52.9MB in the beginning and 142.5MB in the end (delta: -89.6MB). Peak memory consumption was 135.7MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,604 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 234.9MB. Free memory was 142.5MB in the beginning and 141.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:12:59,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.2MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.46ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 49.1MB in the end (delta: 7.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.64ms. Allocated memory is still 77.6MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.85ms. Allocated memory is still 77.6MB. Free memory was 46.8MB in the beginning and 44.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.29ms. Allocated memory is still 77.6MB. Free memory was 44.7MB in the beginning and 53.3MB in the end (delta: -8.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 155819.52ms. Allocated memory was 77.6MB in the beginning and 234.9MB in the end (delta: 157.3MB). Free memory was 52.9MB in the beginning and 142.5MB in the end (delta: -89.6MB). Peak memory consumption was 135.7MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 234.9MB. Free memory was 142.5MB in the beginning and 141.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 534]: 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: [L602] struct list_head top = { &(top), &(top) }; [L603] CALL create_top(&top) [L597] CALL insert_top(top) [L587] struct top_list *top = malloc(sizeof(*top)); [L588] COND FALSE !(!top) [L590] CALL create_sub_list(&top->sub1) [L579] sub->prev = sub [L580] sub->next = sub [L582] CALL insert_sub(sub) [L571] struct sub_list *sub = malloc(sizeof(*sub)); [L572] COND FALSE !(!sub) [L574] sub->number = 0 [L575] CALL list_add_tail(&sub->link, head) [L538] EXPR head->prev [L538] CALL __list_add(new, head->prev, head) [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: 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 4 procedures, 87 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 155.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 529 mSDsluCounter, 4362 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 448 IncrementalHoareTripleChecker+Unchecked, 3453 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2113 IncrementalHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 909 mSDtfsCounter, 2113 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 205 SyntacticMatches, 21 SemanticMatches, 122 ConstructedPredicates, 5 IntricatePredicates, 3 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 61.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=12, InterpolantAutomatonStates: 91, 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, 12 MinimizatonAttempts, 62 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 68.6s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 320 ConstructedInterpolants, 28 QuantifiedInterpolants, 2859 SizeOfPredicates, 104 NumberOfNonLiveVariables, 1403 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 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 [2021-11-20 07:12:59,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ffca37-8cec-4b55-af37-3658066ee8ec/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN