./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:22:10,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:22:10,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:22:10,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:22:10,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:22:10,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:22:10,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:22:10,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:22:10,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:22:10,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:22:10,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:22:10,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:22:10,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:22:10,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:22:10,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:22:10,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:22:10,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:22:10,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:22:10,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:22:10,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:22:10,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:22:10,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:22:10,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:22:10,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:22:10,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:22:10,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:22:10,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:22:10,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:22:10,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:22:10,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:22:10,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:22:10,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:22:10,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:22:10,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:22:10,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:22:10,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:22:10,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:22:10,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:22:10,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:22:10,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:22:10,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:22:10,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:22:10,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:22:10,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:22:10,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:22:10,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:22:10,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:22:10,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:22:10,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:22:10,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:22:10,835 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:22:10,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:22:10,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:22:10,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:22:10,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:22:10,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:22:10,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:22:10,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:22:10,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:22:10,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:22:10,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:22:10,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:22:10,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:22:10,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:22:10,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:22:10,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:22:10,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:22:10,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:22:10,839 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_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2021-12-06 22:22:11,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:22:11,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:22:11,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:22:11,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:22:11,050 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:22:11,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2021-12-06 22:22:11,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/6ec2019a1/eb40d38144aa4784af406cf9721aee39/FLAGcf78d2a66 [2021-12-06 22:22:11,551 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:22:11,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2021-12-06 22:22:11,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/6ec2019a1/eb40d38144aa4784af406cf9721aee39/FLAGcf78d2a66 [2021-12-06 22:22:11,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/6ec2019a1/eb40d38144aa4784af406cf9721aee39 [2021-12-06 22:22:11,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:22:11,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:22:11,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:22:11,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:22:11,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:22:11,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:22:11" (1/1) ... [2021-12-06 22:22:11,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff9c444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:11, skipping insertion in model container [2021-12-06 22:22:11,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:22:11" (1/1) ... [2021-12-06 22:22:11,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:22:11,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:22:11,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:22:11,927 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) [2021-12-06 22:22:11,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@707fe320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:11, skipping insertion in model container [2021-12-06 22:22:11,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:22:11,928 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 22:22:11,930 INFO L158 Benchmark]: Toolchain (without parser) took 351.03ms. Allocated memory is still 130.0MB. Free memory was 89.9MB in the beginning and 100.6MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:22:11,930 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory was 108.7MB in the beginning and 108.5MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:22:11,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.76ms. Allocated memory is still 130.0MB. Free memory was 89.7MB in the beginning and 100.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:22:11,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory was 108.7MB in the beginning and 108.5MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.76ms. Allocated memory is still 130.0MB. Free memory was 89.7MB in the beginning and 100.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:22:13,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:22:13,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:22:13,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:22:13,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:22:13,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:22:13,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:22:13,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:22:13,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:22:13,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:22:13,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:22:13,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:22:13,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:22:13,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:22:13,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:22:13,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:22:13,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:22:13,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:22:13,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:22:13,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:22:13,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:22:13,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:22:13,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:22:13,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:22:13,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:22:13,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:22:13,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:22:13,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:22:13,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:22:13,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:22:13,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:22:13,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:22:13,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:22:13,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:22:13,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:22:13,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:22:13,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:22:13,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:22:13,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:22:13,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:22:13,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:22:13,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 22:22:13,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:22:13,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:22:13,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:22:13,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:22:13,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:22:13,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:22:13,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:22:13,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:22:13,403 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:22:13,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:22:13,404 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:22:13,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:22:13,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:22:13,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:22:13,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:22:13,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:22:13,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:22:13,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:22:13,406 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 22:22:13,407 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:13,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:22:13,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 22:22:13,407 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_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2021-12-06 22:22:13,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:22:13,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:22:13,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:22:13,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:22:13,662 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:22:13,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2021-12-06 22:22:13,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/ecea54b88/b657cee870a74265964d3d3882f9a739/FLAG700b021fe [2021-12-06 22:22:14,160 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:22:14,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2021-12-06 22:22:14,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/ecea54b88/b657cee870a74265964d3d3882f9a739/FLAG700b021fe [2021-12-06 22:22:14,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/data/ecea54b88/b657cee870a74265964d3d3882f9a739 [2021-12-06 22:22:14,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:22:14,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:22:14,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:22:14,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:22:14,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:22:14,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e94549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14, skipping insertion in model container [2021-12-06 22:22:14,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:22:14,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:22:14,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:22:14,540 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 22:22:14,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:22:14,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:22:14,604 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:22:14,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:22:14,693 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:22:14,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14 WrapperNode [2021-12-06 22:22:14,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:22:14,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:22:14,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:22:14,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:22:14,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,753 INFO L137 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 96 [2021-12-06 22:22:14,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:22:14,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:22:14,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:22:14,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:22:14,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:22:14,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:22:14,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:22:14,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:22:14,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (1/1) ... [2021-12-06 22:22:14,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:22:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:14,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:22:14,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:22:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:22:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2021-12-06 22:22:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:22:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:22:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:22:14,926 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:22:14,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:22:15,149 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:22:15,156 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:22:15,157 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:22:15,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:22:15 BoogieIcfgContainer [2021-12-06 22:22:15,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:22:15,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:22:15,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:22:15,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:22:15,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:22:14" (1/3) ... [2021-12-06 22:22:15,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c69057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:22:15, skipping insertion in model container [2021-12-06 22:22:15,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:22:14" (2/3) ... [2021-12-06 22:22:15,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c69057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:22:15, skipping insertion in model container [2021-12-06 22:22:15,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:22:15" (3/3) ... [2021-12-06 22:22:15,166 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2021-12-06 22:22:15,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:22:15,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-12-06 22:22:15,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:22:15,224 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 [2021-12-06 22:22:15,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-12-06 22:22:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:22:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:22:15,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:15,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:15,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2113619829, now seen corresponding path program 1 times [2021-12-06 22:22:15,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:15,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185711907] [2021-12-06 22:22:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:15,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:15,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:15,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:15,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:22:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:15,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:22:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:15,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:15,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:15,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185711907] [2021-12-06 22:22:15,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185711907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:15,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:15,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:15,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846061947] [2021-12-06 22:22:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:15,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:15,431 INFO L87 Difference]: Start difference. First operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:22:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:15,514 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2021-12-06 22:22:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:15,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-06 22:22:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:15,524 INFO L225 Difference]: With dead ends: 167 [2021-12-06 22:22:15,524 INFO L226 Difference]: Without dead ends: 163 [2021-12-06 22:22:15,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:15,528 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 73 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:15,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 485 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-06 22:22:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 92. [2021-12-06 22:22:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 22:22:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2021-12-06 22:22:15,569 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 11 [2021-12-06 22:22:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:15,569 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2021-12-06 22:22:15,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:22:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2021-12-06 22:22:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:22:15,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:15,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:15,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:22:15,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:15,772 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1293843786, now seen corresponding path program 1 times [2021-12-06 22:22:15,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346336888] [2021-12-06 22:22:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:15,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:15,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:15,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 22:22:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:15,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:22:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:15,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:15,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:15,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346336888] [2021-12-06 22:22:15,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346336888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:15,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:15,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:22:15,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50828688] [2021-12-06 22:22:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:22:15,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:22:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:22:15,939 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:22:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:16,104 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2021-12-06 22:22:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:22:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-06 22:22:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:16,106 INFO L225 Difference]: With dead ends: 163 [2021-12-06 22:22:16,107 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 22:22:16,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:22:16,108 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 70 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:16,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 321 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:22:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 22:22:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 88. [2021-12-06 22:22:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.68) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:22:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-12-06 22:22:16,121 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2021-12-06 22:22:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:16,122 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-12-06 22:22:16,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:22:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-12-06 22:22:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:22:16,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:16,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:16,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 22:22:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:16,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026591, now seen corresponding path program 1 times [2021-12-06 22:22:16,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:16,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584123285] [2021-12-06 22:22:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:16,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:16,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:16,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:16,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 22:22:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:16,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:22:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:16,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:16,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:16,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584123285] [2021-12-06 22:22:16,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584123285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:16,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:16,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:16,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700912562] [2021-12-06 22:22:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:16,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:16,495 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:22:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:16,547 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-12-06 22:22:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-06 22:22:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:16,549 INFO L225 Difference]: With dead ends: 160 [2021-12-06 22:22:16,549 INFO L226 Difference]: Without dead ends: 160 [2021-12-06 22:22:16,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:16,550 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 68 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:16,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 375 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-06 22:22:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 92. [2021-12-06 22:22:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 22:22:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-12-06 22:22:16,559 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 17 [2021-12-06 22:22:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:16,559 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-12-06 22:22:16,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:22:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-12-06 22:22:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:22:16,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:16,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:16,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 22:22:16,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:16,761 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:16,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026607, now seen corresponding path program 1 times [2021-12-06 22:22:16,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186380220] [2021-12-06 22:22:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:16,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:16,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:16,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:16,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 22:22:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:16,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:22:16,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:16,886 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 [2021-12-06 22:22:17,007 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:22:17,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 29 treesize of output 36 [2021-12-06 22:22:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:17,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:17,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:17,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186380220] [2021-12-06 22:22:17,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186380220] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:22:17,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:17,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-12-06 22:22:17,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789286884] [2021-12-06 22:22:17,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:17,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:22:17,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:22:17,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:22:17,255 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:17,403 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-12-06 22:22:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:22:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-12-06 22:22:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:17,404 INFO L225 Difference]: With dead ends: 112 [2021-12-06 22:22:17,404 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 22:22:17,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:22:17,405 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 10 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:17,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 326 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2021-12-06 22:22:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 22:22:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2021-12-06 22:22:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 95 states have internal predecessors, (106), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 22:22:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-12-06 22:22:17,414 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 17 [2021-12-06 22:22:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:17,414 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-12-06 22:22:17,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-12-06 22:22:17,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:22:17,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:17,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:17,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 22:22:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:17,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026606, now seen corresponding path program 1 times [2021-12-06 22:22:17,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:17,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047964373] [2021-12-06 22:22:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:17,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:17,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:17,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 22:22:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:17,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:22:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:17,744 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 [2021-12-06 22:22:17,750 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 [2021-12-06 22:22:19,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:19,914 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 [2021-12-06 22:22:19,924 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:19,924 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 22 treesize of output 22 [2021-12-06 22:22:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:19,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:22,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047964373] [2021-12-06 22:22:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047964373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1586742375] [2021-12-06 22:22:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:22,214 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:22:22,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:22:22,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-12-06 22:22:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:22:22,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:22,296 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 [2021-12-06 22:22:22,302 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 [2021-12-06 22:22:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:22,436 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 [2021-12-06 22:22:22,447 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:22,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:22:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:22,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:24,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1586742375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:24,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 22:22:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196065855] [2021-12-06 22:22:24,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:24,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:22:24,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:22:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=85, Unknown=2, NotChecked=0, Total=110 [2021-12-06 22:22:24,665 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:22:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:27,243 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2021-12-06 22:22:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:22:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-06 22:22:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:27,245 INFO L225 Difference]: With dead ends: 203 [2021-12-06 22:22:27,245 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 22:22:27,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=32, Invalid=121, Unknown=3, NotChecked=0, Total=156 [2021-12-06 22:22:27,246 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 162 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:27,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 615 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 411 Invalid, 0 Unknown, 83 Unchecked, 0.5s Time] [2021-12-06 22:22:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 22:22:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 145. [2021-12-06 22:22:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 99 states have (on average 1.6262626262626263) internal successors, (161), 127 states have internal predecessors, (161), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-06 22:22:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2021-12-06 22:22:27,255 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 17 [2021-12-06 22:22:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:27,255 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2021-12-06 22:22:27,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:22:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2021-12-06 22:22:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:22:27,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:27,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:27,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 22:22:27,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-12-06 22:22:27,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:27,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2086429614, now seen corresponding path program 1 times [2021-12-06 22:22:27,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:27,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143535435] [2021-12-06 22:22:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:27,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:27,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:27,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 22:22:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:27,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:22:27,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:27,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:27,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:27,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143535435] [2021-12-06 22:22:27,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143535435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:27,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:27,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:27,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853244009] [2021-12-06 22:22:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:27,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:27,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:27,811 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:22:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:27,839 INFO L93 Difference]: Finished difference Result 136 states and 175 transitions. [2021-12-06 22:22:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:27,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-06 22:22:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:27,840 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:22:27,840 INFO L226 Difference]: Without dead ends: 134 [2021-12-06 22:22:27,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:27,841 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:27,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-06 22:22:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-12-06 22:22:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 92 states have (on average 1.641304347826087) internal successors, (151), 119 states have internal predecessors, (151), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 22:22:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 173 transitions. [2021-12-06 22:22:27,848 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 173 transitions. Word has length 17 [2021-12-06 22:22:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:27,848 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 173 transitions. [2021-12-06 22:22:27,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:22:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 173 transitions. [2021-12-06 22:22:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:22:27,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:27,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:27,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 22:22:28,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:28,050 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1138254343, now seen corresponding path program 1 times [2021-12-06 22:22:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:28,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881144277] [2021-12-06 22:22:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:28,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:28,056 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:28,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 22:22:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:28,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:22:28,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:28,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:28,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:28,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881144277] [2021-12-06 22:22:28,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881144277] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:22:28,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:28,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-12-06 22:22:28,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60283323] [2021-12-06 22:22:28,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:28,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:22:28,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:22:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:22:28,332 INFO L87 Difference]: Start difference. First operand 134 states and 173 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:22:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:28,506 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2021-12-06 22:22:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:22:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2021-12-06 22:22:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:28,507 INFO L225 Difference]: With dead ends: 139 [2021-12-06 22:22:28,507 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 22:22:28,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:22:28,508 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 71 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:28,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 344 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-12-06 22:22:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 22:22:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-06 22:22:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.6) internal successors, (152), 121 states have internal predecessors, (152), 9 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 22:22:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 174 transitions. [2021-12-06 22:22:28,515 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 174 transitions. Word has length 18 [2021-12-06 22:22:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:28,515 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 174 transitions. [2021-12-06 22:22:28,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:22:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 174 transitions. [2021-12-06 22:22:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 22:22:28,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:28,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:28,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 22:22:28,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:28,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 968466533, now seen corresponding path program 1 times [2021-12-06 22:22:28,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780184163] [2021-12-06 22:22:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:28,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:28,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:28,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:28,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 22:22:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:22:28,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:30,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:31,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:31,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780184163] [2021-12-06 22:22:31,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780184163] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:31,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1859465246] [2021-12-06 22:22:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:31,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:22:31,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:22:31,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-12-06 22:22:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:22:31,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:31,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:31,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1859465246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:31,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:31,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-06 22:22:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69092103] [2021-12-06 22:22:31,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:31,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:22:31,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:22:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2021-12-06 22:22:31,375 INFO L87 Difference]: Start difference. First operand 137 states and 174 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:22:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:31,437 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2021-12-06 22:22:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:22:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2021-12-06 22:22:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:31,438 INFO L225 Difference]: With dead ends: 140 [2021-12-06 22:22:31,438 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 22:22:31,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2021-12-06 22:22:31,439 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 10 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:31,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 551 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 206 Unchecked, 0.1s Time] [2021-12-06 22:22:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 22:22:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 130. [2021-12-06 22:22:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 89 states have (on average 1.6292134831460674) internal successors, (145), 115 states have internal predecessors, (145), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:22:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 166 transitions. [2021-12-06 22:22:31,443 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 166 transitions. Word has length 21 [2021-12-06 22:22:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:31,444 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 166 transitions. [2021-12-06 22:22:31,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:22:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 166 transitions. [2021-12-06 22:22:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:22:31,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:31,444 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:31,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 22:22:31,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:22:31,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:31,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash -406257806, now seen corresponding path program 1 times [2021-12-06 22:22:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521359558] [2021-12-06 22:22:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:31,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:31,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:31,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 22:22:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:22:31,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:31,921 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 [2021-12-06 22:22:31,997 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:22:31,997 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 [2021-12-06 22:22:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:32,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:32,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521359558] [2021-12-06 22:22:32,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521359558] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:22:32,180 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:32,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-12-06 22:22:32,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759437633] [2021-12-06 22:22:32,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:32,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:22:32,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:22:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:22:32,182 INFO L87 Difference]: Start difference. First operand 130 states and 166 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:22:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:32,485 INFO L93 Difference]: Finished difference Result 199 states and 255 transitions. [2021-12-06 22:22:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:22:32,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-12-06 22:22:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:32,487 INFO L225 Difference]: With dead ends: 199 [2021-12-06 22:22:32,487 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 22:22:32,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:22:32,488 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 55 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:32,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 454 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 235 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2021-12-06 22:22:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 22:22:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 148. [2021-12-06 22:22:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 105 states have (on average 1.6095238095238096) internal successors, (169), 130 states have internal predecessors, (169), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2021-12-06 22:22:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2021-12-06 22:22:32,493 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 25 [2021-12-06 22:22:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:32,494 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2021-12-06 22:22:32,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:22:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2021-12-06 22:22:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:22:32,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:32,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:32,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 22:22:32,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:32,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash -406257805, now seen corresponding path program 1 times [2021-12-06 22:22:32,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678992556] [2021-12-06 22:22:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:32,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:32,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:32,697 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:32,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 22:22:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 22:22:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:32,773 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 [2021-12-06 22:22:36,938 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:22:36,938 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 14 [2021-12-06 22:22:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:22:36,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:37,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678992556] [2021-12-06 22:22:37,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678992556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1179751786] [2021-12-06 22:22:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:37,223 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:22:37,224 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:22:37,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-06 22:22:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:37,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:22:37,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:37,334 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 [2021-12-06 22:22:37,340 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 [2021-12-06 22:22:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:39,602 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 [2021-12-06 22:22:39,613 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:39,613 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 25 [2021-12-06 22:22:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:22:39,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:41,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1179751786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:41,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:41,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-06 22:22:41,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574646282] [2021-12-06 22:22:41,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:41,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:22:41,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:22:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=225, Unknown=4, NotChecked=0, Total=272 [2021-12-06 22:22:41,953 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:22:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:44,549 INFO L93 Difference]: Finished difference Result 273 states and 354 transitions. [2021-12-06 22:22:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:22:44,550 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2021-12-06 22:22:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:44,552 INFO L225 Difference]: With dead ends: 273 [2021-12-06 22:22:44,552 INFO L226 Difference]: Without dead ends: 273 [2021-12-06 22:22:44,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=56, Invalid=281, Unknown=5, NotChecked=0, Total=342 [2021-12-06 22:22:44,553 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 96 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:44,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 732 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 418 Invalid, 0 Unknown, 149 Unchecked, 0.5s Time] [2021-12-06 22:22:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-06 22:22:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 206. [2021-12-06 22:22:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 157 states have (on average 1.624203821656051) internal successors, (255), 182 states have internal predecessors, (255), 16 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (23), 19 states have call predecessors, (23), 16 states have call successors, (23) [2021-12-06 22:22:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 294 transitions. [2021-12-06 22:22:44,562 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 294 transitions. Word has length 25 [2021-12-06 22:22:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:44,562 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 294 transitions. [2021-12-06 22:22:44,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:22:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 294 transitions. [2021-12-06 22:22:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:22:44,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:44,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:44,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-12-06 22:22:44,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 22:22:44,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:44,965 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:44,967 INFO L85 PathProgramCache]: Analyzing trace with hash -911816431, now seen corresponding path program 1 times [2021-12-06 22:22:44,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471290829] [2021-12-06 22:22:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:44,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:44,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:44,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:44,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 22:22:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:45,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:22:45,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:45,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:45,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471290829] [2021-12-06 22:22:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471290829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:45,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:45,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:45,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155314275] [2021-12-06 22:22:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:45,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:45,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:45,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:45,104 INFO L87 Difference]: Start difference. First operand 206 states and 294 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:45,131 INFO L93 Difference]: Finished difference Result 161 states and 212 transitions. [2021-12-06 22:22:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-12-06 22:22:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:45,133 INFO L225 Difference]: With dead ends: 161 [2021-12-06 22:22:45,133 INFO L226 Difference]: Without dead ends: 157 [2021-12-06 22:22:45,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:45,134 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:45,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-06 22:22:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-06 22:22:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 116 states have (on average 1.5775862068965518) internal successors, (183), 139 states have internal predecessors, (183), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 22:22:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 208 transitions. [2021-12-06 22:22:45,139 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 208 transitions. Word has length 25 [2021-12-06 22:22:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:45,139 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 208 transitions. [2021-12-06 22:22:45,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 208 transitions. [2021-12-06 22:22:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:22:45,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:45,140 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:45,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 22:22:45,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:45,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash 290909999, now seen corresponding path program 1 times [2021-12-06 22:22:45,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:45,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547160262] [2021-12-06 22:22:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:45,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:45,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:45,346 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:45,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 22:22:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:45,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:22:45,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:22:45,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:45,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:45,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547160262] [2021-12-06 22:22:45,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547160262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:45,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:45,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:45,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782060814] [2021-12-06 22:22:45,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:45,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:45,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:45,481 INFO L87 Difference]: Start difference. First operand 157 states and 208 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:22:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:45,513 INFO L93 Difference]: Finished difference Result 206 states and 255 transitions. [2021-12-06 22:22:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-12-06 22:22:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:45,514 INFO L225 Difference]: With dead ends: 206 [2021-12-06 22:22:45,514 INFO L226 Difference]: Without dead ends: 206 [2021-12-06 22:22:45,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:22:45,515 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 59 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:45,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 366 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-06 22:22:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 154. [2021-12-06 22:22:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.575221238938053) internal successors, (178), 136 states have internal predecessors, (178), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 22:22:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2021-12-06 22:22:45,520 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 26 [2021-12-06 22:22:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:45,520 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2021-12-06 22:22:45,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:22:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2021-12-06 22:22:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:22:45,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:45,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:45,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 22:22:45,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:45,722 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1178413680, now seen corresponding path program 1 times [2021-12-06 22:22:45,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:45,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120609162] [2021-12-06 22:22:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:45,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:45,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 22:22:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:22:45,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:22:46,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:22:46,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:46,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120609162] [2021-12-06 22:22:46,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120609162] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:22:46,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:46,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-12-06 22:22:46,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685291668] [2021-12-06 22:22:46,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:46,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:22:46,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:22:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:22:46,162 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:22:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:46,229 INFO L93 Difference]: Finished difference Result 199 states and 249 transitions. [2021-12-06 22:22:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:22:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2021-12-06 22:22:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:46,230 INFO L225 Difference]: With dead ends: 199 [2021-12-06 22:22:46,230 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 22:22:46,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:22:46,231 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 65 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:46,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 413 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2021-12-06 22:22:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 22:22:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2021-12-06 22:22:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 121 states have (on average 1.5537190082644627) internal successors, (188), 145 states have internal predecessors, (188), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 22:22:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2021-12-06 22:22:46,236 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 26 [2021-12-06 22:22:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:46,236 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2021-12-06 22:22:46,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:22:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2021-12-06 22:22:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:22:46,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:46,237 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:46,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-06 22:22:46,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:46,438 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 428272563, now seen corresponding path program 1 times [2021-12-06 22:22:46,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:46,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095427376] [2021-12-06 22:22:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:46,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:46,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:46,443 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:46,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 22:22:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:22:46,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:46,588 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 [2021-12-06 22:22:46,639 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:22:46,639 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 17 treesize of output 22 [2021-12-06 22:22:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:22:46,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:46,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:46,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095427376] [2021-12-06 22:22:46,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095427376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:46,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:46,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:22:46,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291281652] [2021-12-06 22:22:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:46,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:22:46,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:22:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:22:46,662 INFO L87 Difference]: Start difference. First operand 165 states and 213 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:46,832 INFO L93 Difference]: Finished difference Result 203 states and 255 transitions. [2021-12-06 22:22:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:22:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-12-06 22:22:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:46,834 INFO L225 Difference]: With dead ends: 203 [2021-12-06 22:22:46,834 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 22:22:46,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:22:46,835 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 90 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:46,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 317 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 136 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2021-12-06 22:22:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 22:22:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 164. [2021-12-06 22:22:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.537190082644628) internal successors, (186), 144 states have internal predecessors, (186), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 22:22:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-12-06 22:22:46,839 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 27 [2021-12-06 22:22:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:46,839 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-12-06 22:22:46,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:22:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-12-06 22:22:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:22:46,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:46,840 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:46,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 22:22:47,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:47,041 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:47,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash 428272564, now seen corresponding path program 1 times [2021-12-06 22:22:47,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:47,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54835199] [2021-12-06 22:22:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:47,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:47,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:47,046 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:47,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 22:22:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 22:22:47,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:47,174 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 [2021-12-06 22:22:47,179 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 [2021-12-06 22:22:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:47,371 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 [2021-12-06 22:22:47,379 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:47,380 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 21 treesize of output 21 [2021-12-06 22:22:47,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:47,499 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 [2021-12-06 22:22:47,507 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:47,508 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 21 treesize of output 21 [2021-12-06 22:22:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:22:47,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:49,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54835199] [2021-12-06 22:22:49,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54835199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1675958567] [2021-12-06 22:22:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:49,877 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:49,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:22:49,877 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:22:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-12-06 22:22:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:49,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 22:22:49,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:49,991 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 [2021-12-06 22:22:49,996 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 [2021-12-06 22:22:50,099 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:22:50,099 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 [2021-12-06 22:22:50,113 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:50,114 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 25 [2021-12-06 22:22:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:22:52,252 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 [2021-12-06 22:22:52,259 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:52,259 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 22 treesize of output 22 [2021-12-06 22:22:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:22:52,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:54,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1675958567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:54,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:54,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 11 [2021-12-06 22:22:54,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976437244] [2021-12-06 22:22:54,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:54,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:22:54,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:22:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=174, Unknown=1, NotChecked=0, Total=210 [2021-12-06 22:22:54,509 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:22:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:55,265 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2021-12-06 22:22:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:22:55,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-12-06 22:22:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:55,267 INFO L225 Difference]: With dead ends: 222 [2021-12-06 22:22:55,267 INFO L226 Difference]: Without dead ends: 222 [2021-12-06 22:22:55,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2021-12-06 22:22:55,267 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 174 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:55,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 917 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 551 Invalid, 0 Unknown, 152 Unchecked, 0.6s Time] [2021-12-06 22:22:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-06 22:22:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 133. [2021-12-06 22:22:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 116 states have internal predecessors, (140), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 22:22:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2021-12-06 22:22:55,271 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 27 [2021-12-06 22:22:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:55,272 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2021-12-06 22:22:55,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:22:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2021-12-06 22:22:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:22:55,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:55,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:55,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-12-06 22:22:55,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 22:22:55,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:22:55,674 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:22:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -746927052, now seen corresponding path program 1 times [2021-12-06 22:22:55,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:22:55,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511079975] [2021-12-06 22:22:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:55,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:22:55,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:22:55,679 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:22:55,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 22:22:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:55,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 22:22:55,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:55,859 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 11 treesize of output 7 [2021-12-06 22:22:55,879 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 [2021-12-06 22:22:55,979 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 22:22:55,979 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2021-12-06 22:22:56,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:22:56,074 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2021-12-06 22:22:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:22:56,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:56,405 INFO L354 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-12-06 22:22:56,405 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 83 treesize of output 82 [2021-12-06 22:22:56,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:22:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511079975] [2021-12-06 22:22:56,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511079975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1164777307] [2021-12-06 22:22:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:56,475 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:22:56,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:22:56,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:22:56,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-12-06 22:22:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:56,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 22:22:56,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:56,589 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 [2021-12-06 22:22:56,760 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:22:56,760 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 21 treesize of output 21 [2021-12-06 22:22:56,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:22:58,901 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16|))) is different from true [2021-12-06 22:22:59,009 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:22:59,010 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-12-06 22:22:59,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-12-06 22:22:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-06 22:22:59,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:59,159 INFO L354 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-12-06 22:22:59,159 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 34 treesize of output 33 [2021-12-06 22:22:59,165 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_247 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_247) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) is different from false [2021-12-06 22:22:59,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1164777307] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:59,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:22:59,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-06 22:22:59,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119999686] [2021-12-06 22:22:59,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:59,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 22:22:59,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:22:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 22:22:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=839, Unknown=2, NotChecked=118, Total=1056 [2021-12-06 22:22:59,179 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand has 27 states, 25 states have (on average 1.52) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:23:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:09,993 INFO L93 Difference]: Finished difference Result 205 states and 231 transitions. [2021-12-06 22:23:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 22:23:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.52) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-12-06 22:23:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:09,994 INFO L225 Difference]: With dead ends: 205 [2021-12-06 22:23:09,994 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 22:23:09,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=362, Invalid=2092, Unknown=4, NotChecked=194, Total=2652 [2021-12-06 22:23:09,995 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 381 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:09,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1312 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1233 Invalid, 0 Unknown, 215 Unchecked, 1.5s Time] [2021-12-06 22:23:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 22:23:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 100. [2021-12-06 22:23:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 87 states have internal predecessors, (92), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:23:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2021-12-06 22:23:09,999 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 29 [2021-12-06 22:23:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:09,999 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2021-12-06 22:23:09,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.52) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:23:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2021-12-06 22:23:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:23:10,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:10,000 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:10,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 22:23:10,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-12-06 22:23:10,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:10,401 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:23:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -746927051, now seen corresponding path program 1 times [2021-12-06 22:23:10,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:23:10,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847020853] [2021-12-06 22:23:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:10,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:23:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:23:10,406 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:23:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 22:23:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:10,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 22:23:10,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:10,493 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 [2021-12-06 22:23:10,544 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:23:10,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:23:10,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:10,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:10,758 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:23:10,759 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:23:10,763 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 18 treesize of output 20 [2021-12-06 22:23:10,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:23:10,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:23:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:23:10,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:11,309 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:23:11,310 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 50 treesize of output 54 [2021-12-06 22:23:11,404 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_271) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) (and (or (forall ((v_ArrVal_272 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_272) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|) |c_ULTIMATE.start_entry_point_~cfg~1#1.base|)) (and (forall ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_1) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (_ bv0 32))) .cse0)) (forall ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_1) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset|))) .cse0)) is different from false [2021-12-06 22:23:11,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:23:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847020853] [2021-12-06 22:23:11,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847020853] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [630673294] [2021-12-06 22:23:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:11,489 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:11,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:23:11,490 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:23:11,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-12-06 22:23:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 22:23:11,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:11,626 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 [2021-12-06 22:23:11,801 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 [2021-12-06 22:23:13,904 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:23:13,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 27 treesize of output 34 [2021-12-06 22:23:14,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:14,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:14,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 21 [2021-12-06 22:23:14,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 22:23:18,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:23:18,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-12-06 22:23:18,517 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 22:23:18,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2021-12-06 22:23:18,657 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:23:18,657 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:23:18,662 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 18 treesize of output 20 [2021-12-06 22:23:18,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:23:18,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:23:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:23:18,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:18,989 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_300 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_300) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_300 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_300) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_299) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))))) is different from false [2021-12-06 22:23:19,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [630673294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:19,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:23:19,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-12-06 22:23:19,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693193242] [2021-12-06 22:23:19,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:23:19,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 22:23:19,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:23:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 22:23:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1066, Unknown=15, NotChecked=134, Total=1332 [2021-12-06 22:23:19,558 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:23:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:22,994 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-12-06 22:23:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 22:23:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-12-06 22:23:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:22,996 INFO L225 Difference]: With dead ends: 158 [2021-12-06 22:23:22,996 INFO L226 Difference]: Without dead ends: 158 [2021-12-06 22:23:22,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=244, Invalid=1818, Unknown=16, NotChecked=178, Total=2256 [2021-12-06 22:23:22,997 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 131 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:22,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 817 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 570 Invalid, 0 Unknown, 111 Unchecked, 0.6s Time] [2021-12-06 22:23:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-06 22:23:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 99. [2021-12-06 22:23:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.338235294117647) internal successors, (91), 86 states have internal predecessors, (91), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:23:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2021-12-06 22:23:23,001 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 29 [2021-12-06 22:23:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:23,001 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2021-12-06 22:23:23,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 22:23:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2021-12-06 22:23:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:23:23,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:23,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:23,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 22:23:23,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-12-06 22:23:23,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:23,402 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:23:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1269350632, now seen corresponding path program 1 times [2021-12-06 22:23:23,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:23:23,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718061196] [2021-12-06 22:23:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:23,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:23:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:23:23,403 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:23:23,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 22:23:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:23,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:23:23,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:23:25,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:28,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:23:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718061196] [2021-12-06 22:23:28,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718061196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1969516151] [2021-12-06 22:23:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:28,122 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:23:28,123 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:23:28,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-12-06 22:23:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:28,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 22:23:28,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:23:41,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:45,477 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 13 treesize of output 11 [2021-12-06 22:23:47,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1969516151] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:47,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:23:47,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-12-06 22:23:47,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786027888] [2021-12-06 22:23:47,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:23:47,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 22:23:47,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:23:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 22:23:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=784, Unknown=10, NotChecked=0, Total=930 [2021-12-06 22:23:47,937 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:23:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:48,062 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-12-06 22:23:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:23:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2021-12-06 22:23:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:48,063 INFO L225 Difference]: With dead ends: 104 [2021-12-06 22:23:48,063 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 22:23:48,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=145, Invalid=901, Unknown=10, NotChecked=0, Total=1056 [2021-12-06 22:23:48,064 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 14 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:48,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 560 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 309 Unchecked, 0.1s Time] [2021-12-06 22:23:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 22:23:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2021-12-06 22:23:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 77 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:23:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-12-06 22:23:48,070 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 32 [2021-12-06 22:23:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:48,070 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-12-06 22:23:48,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:23:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-12-06 22:23:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:23:48,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:48,071 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:48,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-06 22:23:48,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-12-06 22:23:48,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:48,473 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:23:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash 411440938, now seen corresponding path program 1 times [2021-12-06 22:23:48,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:23:48,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121596398] [2021-12-06 22:23:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:48,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:23:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:23:48,480 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:23:48,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 22:23:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:48,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 22:23:48,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:48,574 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 [2021-12-06 22:23:48,617 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:23:48,617 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 26 treesize of output 26 [2021-12-06 22:23:48,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:48,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:23:50,677 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_28| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_17| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_17|)))) is different from true [2021-12-06 22:23:50,686 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 [2021-12-06 22:23:54,852 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-12-06 22:23:54,852 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-12-06 22:23:54,855 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 37 treesize of output 39 [2021-12-06 22:23:54,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-12-06 22:23:55,046 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 22:23:55,046 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 22:23:55,230 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:23:55,230 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 26 treesize of output 31 [2021-12-06 22:23:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2021-12-06 22:23:55,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:58,014 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_371 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |c_ULTIMATE.start_entry_point_#t~ret45#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_371) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))))))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 22:23:58,034 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 125 treesize of output 92 [2021-12-06 22:23:58,045 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_95| (_ BitVec 32)) (v_ArrVal_371 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ldv_malloc_#res.base_95| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ldv_malloc_#res.base_95|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_371) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) is different from false [2021-12-06 22:23:58,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:23:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121596398] [2021-12-06 22:23:58,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121596398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [542656685] [2021-12-06 22:23:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:58,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:23:58,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:23:58,049 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:23:58,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-12-06 22:23:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:58,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 22:23:58,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:58,192 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 [2021-12-06 22:24:00,418 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:00,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:24:00,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:00,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:02,771 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 [2021-12-06 22:24:03,174 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 22:24:03,174 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-12-06 22:24:03,179 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 44 treesize of output 44 [2021-12-06 22:24:03,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-12-06 22:24:03,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:24:03,570 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 22:24:07,725 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:24:07,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 37 treesize of output 44 [2021-12-06 22:24:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:24:07,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:08,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |c_ULTIMATE.start_entry_point_~fe~1#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_404) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))))))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 22:24:08,451 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 124 treesize of output 91 [2021-12-06 22:24:08,462 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_102| (_ BitVec 32)) (v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ldv_malloc_#res.base_102|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_404) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) |v_ldv_malloc_#res.base_102|)) is different from false [2021-12-06 22:24:08,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [542656685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:08,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:24:08,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2021-12-06 22:24:08,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487545640] [2021-12-06 22:24:08,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:24:08,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 22:24:08,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:24:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 22:24:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1644, Unknown=37, NotChecked=430, Total=2256 [2021-12-06 22:24:08,467 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 22:24:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:23,824 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2021-12-06 22:24:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:24:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 38 [2021-12-06 22:24:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:23,826 INFO L225 Difference]: With dead ends: 129 [2021-12-06 22:24:23,826 INFO L226 Difference]: Without dead ends: 129 [2021-12-06 22:24:23,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=232, Invalid=2197, Unknown=41, NotChecked=500, Total=2970 [2021-12-06 22:24:23,827 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 59 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:23,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 861 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 597 Invalid, 0 Unknown, 386 Unchecked, 0.7s Time] [2021-12-06 22:24:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-06 22:24:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2021-12-06 22:24:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 89 states have internal predecessors, (95), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:24:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2021-12-06 22:24:23,830 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 38 [2021-12-06 22:24:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:23,831 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2021-12-06 22:24:23,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 22:24:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2021-12-06 22:24:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:24:23,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:23,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:23,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-12-06 22:24:24,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-06 22:24:24,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:24:24,233 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:24:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash 411440939, now seen corresponding path program 1 times [2021-12-06 22:24:24,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:24:24,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867318378] [2021-12-06 22:24:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:24,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:24:24,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:24:24,237 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:24:24,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 22:24:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:24,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 22:24:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:24,349 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 [2021-12-06 22:24:24,400 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:24,400 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 22 treesize of output 22 [2021-12-06 22:24:24,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:24,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:26,465 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_32| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_20| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_32| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_32|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_20|)))) is different from true [2021-12-06 22:24:28,506 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 [2021-12-06 22:24:28,515 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 [2021-12-06 22:24:30,757 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-12-06 22:24:30,757 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 22:24:30,762 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 57 [2021-12-06 22:24:31,055 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 22:24:31,055 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 54 [2021-12-06 22:24:31,059 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2021-12-06 22:24:31,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:24:31,284 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 [2021-12-06 22:24:31,291 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:31,291 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 30 treesize of output 30 [2021-12-06 22:24:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 22:24:31,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:37,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:24:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867318378] [2021-12-06 22:24:37,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867318378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:37,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155140971] [2021-12-06 22:24:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:37,746 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:24:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:24:37,746 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:24:37,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-12-06 22:24:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:37,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 22:24:37,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:37,923 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 [2021-12-06 22:24:38,165 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:38,165 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 25 [2021-12-06 22:24:38,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:38,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:24:40,644 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 [2021-12-06 22:24:40,648 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 [2021-12-06 22:24:41,148 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 22:24:41,148 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 22:24:41,154 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 60 [2021-12-06 22:24:41,789 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:24:41,789 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 52 [2021-12-06 22:24:41,793 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-12-06 22:24:42,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:24:42,030 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 [2021-12-06 22:24:42,037 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:42,038 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 29 treesize of output 29 [2021-12-06 22:24:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:24:42,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:50,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155140971] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:50,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:24:50,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 39 [2021-12-06 22:24:50,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013649563] [2021-12-06 22:24:50,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:24:50,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 22:24:50,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:24:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 22:24:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1510, Unknown=5, NotChecked=78, Total=1722 [2021-12-06 22:24:50,345 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 40 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 32 states have internal predecessors, (49), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:24:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:53,932 INFO L93 Difference]: Finished difference Result 173 states and 185 transitions. [2021-12-06 22:24:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:24:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 32 states have internal predecessors, (49), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 38 [2021-12-06 22:24:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:53,934 INFO L225 Difference]: With dead ends: 173 [2021-12-06 22:24:53,934 INFO L226 Difference]: Without dead ends: 173 [2021-12-06 22:24:53,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=211, Invalid=2139, Unknown=6, NotChecked=94, Total=2450 [2021-12-06 22:24:53,935 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 105 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 500 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:53,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1301 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 638 Invalid, 0 Unknown, 500 Unchecked, 0.8s Time] [2021-12-06 22:24:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-06 22:24:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 103. [2021-12-06 22:24:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.323943661971831) internal successors, (94), 89 states have internal predecessors, (94), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:24:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-12-06 22:24:53,938 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 38 [2021-12-06 22:24:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:53,938 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-12-06 22:24:53,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 32 states have internal predecessors, (49), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:24:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-12-06 22:24:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:24:53,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:53,939 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:53,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 22:24:54,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-12-06 22:24:54,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:24:54,341 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:24:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash -433030933, now seen corresponding path program 1 times [2021-12-06 22:24:54,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:24:54,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494461300] [2021-12-06 22:24:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:54,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:24:54,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:24:54,346 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:24:54,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 22:24:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:24:54,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:24:54,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:54,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:24:54,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494461300] [2021-12-06 22:24:54,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494461300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:54,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:54,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:24:54,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177101809] [2021-12-06 22:24:54,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:54,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:24:54,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:24:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:24:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:24:54,472 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:24:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:54,494 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-12-06 22:24:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:24:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-12-06 22:24:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:54,495 INFO L225 Difference]: With dead ends: 93 [2021-12-06 22:24:54,495 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 22:24:54,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:24:54,495 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 22:24:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-12-06 22:24:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 75 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:24:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2021-12-06 22:24:54,498 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 38 [2021-12-06 22:24:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:54,498 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-12-06 22:24:54,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:24:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2021-12-06 22:24:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:24:54,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:54,499 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:54,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-06 22:24:54,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:24:54,700 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:24:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:54,701 INFO L85 PathProgramCache]: Analyzing trace with hash 257770205, now seen corresponding path program 1 times [2021-12-06 22:24:54,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:24:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014299583] [2021-12-06 22:24:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:54,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:24:54,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:24:54,703 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:24:54,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 22:24:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:24:54,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:24:54,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:54,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:24:54,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014299583] [2021-12-06 22:24:54,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014299583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:54,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:54,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:24:54,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452045314] [2021-12-06 22:24:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:54,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:24:54,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:24:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:24:54,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:24:54,882 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 22:24:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:54,910 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2021-12-06 22:24:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:24:54,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2021-12-06 22:24:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:54,911 INFO L225 Difference]: With dead ends: 131 [2021-12-06 22:24:54,911 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 22:24:54,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:24:54,912 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 41 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:54,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 393 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 22:24:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 91. [2021-12-06 22:24:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 78 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:24:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2021-12-06 22:24:54,914 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 40 [2021-12-06 22:24:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:54,914 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2021-12-06 22:24:54,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 22:24:54,914 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2021-12-06 22:24:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:24:54,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:54,915 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:54,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 22:24:55,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:24:55,116 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:24:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2000580540, now seen corresponding path program 1 times [2021-12-06 22:24:55,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:24:55,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799969678] [2021-12-06 22:24:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:55,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:24:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:24:55,121 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:24:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 22:24:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:24:55,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:24:55,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:55,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:24:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799969678] [2021-12-06 22:24:55,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799969678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:55,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:55,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:24:55,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379231897] [2021-12-06 22:24:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:55,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:24:55,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:24:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:24:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:24:55,280 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:24:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:55,465 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2021-12-06 22:24:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:24:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-12-06 22:24:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:55,467 INFO L225 Difference]: With dead ends: 126 [2021-12-06 22:24:55,467 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 22:24:55,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:24:55,467 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 50 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:55,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 284 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:24:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 22:24:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2021-12-06 22:24:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 84 states have internal predecessors, (87), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:24:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2021-12-06 22:24:55,470 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 40 [2021-12-06 22:24:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:55,470 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2021-12-06 22:24:55,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:24:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2021-12-06 22:24:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:24:55,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:55,471 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:55,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 22:24:55,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:24:55,671 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_i2c_set_clientdataErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:24:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2000580541, now seen corresponding path program 1 times [2021-12-06 22:24:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:24:55,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281684402] [2021-12-06 22:24:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:55,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:24:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:24:55,673 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:24:55,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-06 22:24:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 22:24:55,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:55,779 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 [2021-12-06 22:24:55,786 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 [2021-12-06 22:24:55,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:24:55,943 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 [2021-12-06 22:24:55,952 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:55,952 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 26 treesize of output 26 [2021-12-06 22:24:56,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:24:56,068 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 [2021-12-06 22:24:56,077 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:56,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:24:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:24:56,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:59,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:24:59,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281684402] [2021-12-06 22:24:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281684402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:59,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268824914] [2021-12-06 22:24:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:59,110 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:24:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:24:59,110 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:24:59,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-12-06 22:24:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:59,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 22:24:59,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:59,294 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 [2021-12-06 22:24:59,299 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 [2021-12-06 22:24:59,420 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:24:59,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:24:59,426 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 [2021-12-06 22:25:01,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:01,582 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 [2021-12-06 22:25:01,589 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:01,589 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 23 treesize of output 23 [2021-12-06 22:25:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:25:01,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:04,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268824914] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:04,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:04,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 14 [2021-12-06 22:25:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005534302] [2021-12-06 22:25:04,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:04,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:25:04,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:04,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:25:04,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=367, Unknown=1, NotChecked=0, Total=420 [2021-12-06 22:25:04,807 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:07,376 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2021-12-06 22:25:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:25:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2021-12-06 22:25:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:07,378 INFO L225 Difference]: With dead ends: 137 [2021-12-06 22:25:07,378 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 22:25:07,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=87, Invalid=561, Unknown=2, NotChecked=0, Total=650 [2021-12-06 22:25:07,378 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 125 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:07,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 632 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 329 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2021-12-06 22:25:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 22:25:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2021-12-06 22:25:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 84 states have internal predecessors, (86), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2021-12-06 22:25:07,381 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 40 [2021-12-06 22:25:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:07,381 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2021-12-06 22:25:07,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2021-12-06 22:25:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:25:07,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:07,382 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:07,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-06 22:25:07,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:07,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:25:07,784 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:07,785 INFO L85 PathProgramCache]: Analyzing trace with hash -599580005, now seen corresponding path program 1 times [2021-12-06 22:25:07,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:07,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467848875] [2021-12-06 22:25:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:07,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:07,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:07,788 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:07,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-06 22:25:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:07,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:25:07,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:07,992 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 [2021-12-06 22:25:08,051 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:25:08,051 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 15 treesize of output 20 [2021-12-06 22:25:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:08,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:08,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:08,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467848875] [2021-12-06 22:25:08,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467848875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:08,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:08,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:25:08,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172460238] [2021-12-06 22:25:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:08,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:08,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:08,086 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:25:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:08,258 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-12-06 22:25:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:25:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2021-12-06 22:25:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:08,259 INFO L225 Difference]: With dead ends: 118 [2021-12-06 22:25:08,259 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 22:25:08,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:25:08,260 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 48 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:08,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 273 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2021-12-06 22:25:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 22:25:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2021-12-06 22:25:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 83 states have internal predecessors, (85), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-12-06 22:25:08,263 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 41 [2021-12-06 22:25:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-12-06 22:25:08,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:25:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-12-06 22:25:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:25:08,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:08,263 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:08,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:08,464 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_i2c_set_clientdataErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash -599580004, now seen corresponding path program 1 times [2021-12-06 22:25:08,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700065409] [2021-12-06 22:25:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:08,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:08,470 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:08,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 22:25:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 22:25:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:08,636 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 [2021-12-06 22:25:08,641 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 [2021-12-06 22:25:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:10,792 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 [2021-12-06 22:25:10,800 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:10,800 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 28 [2021-12-06 22:25:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:10,911 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 [2021-12-06 22:25:10,919 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:10,920 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 28 [2021-12-06 22:25:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:13,098 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 [2021-12-06 22:25:13,104 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:13,104 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 [2021-12-06 22:25:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:13,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:13,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700065409] [2021-12-06 22:25:13,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700065409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [92679008] [2021-12-06 22:25:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:13,704 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:25:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:25:13,705 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:25:13,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-12-06 22:25:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 22:25:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:13,900 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 [2021-12-06 22:25:13,904 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 [2021-12-06 22:25:14,033 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:14,033 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 30 treesize of output 30 [2021-12-06 22:25:14,042 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 [2021-12-06 22:25:14,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:14,181 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 [2021-12-06 22:25:14,191 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:14,192 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 28 [2021-12-06 22:25:14,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:14,323 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 [2021-12-06 22:25:14,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:25:14,335 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 22 treesize of output 22 [2021-12-06 22:25:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:25:14,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:16,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [92679008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:16,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:16,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 14 [2021-12-06 22:25:16,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500429387] [2021-12-06 22:25:16,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:16,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:25:16,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:16,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:25:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=297, Unknown=1, NotChecked=0, Total=342 [2021-12-06 22:25:16,685 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:17,443 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2021-12-06 22:25:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:25:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2021-12-06 22:25:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:17,444 INFO L225 Difference]: With dead ends: 156 [2021-12-06 22:25:17,444 INFO L226 Difference]: Without dead ends: 156 [2021-12-06 22:25:17,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=80, Invalid=519, Unknown=1, NotChecked=0, Total=600 [2021-12-06 22:25:17,445 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 170 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:17,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 546 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 416 Invalid, 0 Unknown, 47 Unchecked, 0.5s Time] [2021-12-06 22:25:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-06 22:25:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 96. [2021-12-06 22:25:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 82 states have internal predecessors, (84), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2021-12-06 22:25:17,448 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 41 [2021-12-06 22:25:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:17,448 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2021-12-06 22:25:17,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2021-12-06 22:25:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:25:17,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:17,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:17,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 22:25:17,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:17,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:25:17,850 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -359356304, now seen corresponding path program 1 times [2021-12-06 22:25:17,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818481628] [2021-12-06 22:25:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:17,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:17,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:17,854 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:17,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-06 22:25:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:17,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:25:17,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:17,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:17,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818481628] [2021-12-06 22:25:17,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818481628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:17,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:17,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:25:17,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330727993] [2021-12-06 22:25:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:17,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:25:17,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:25:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:17,998 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:18,024 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-12-06 22:25:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:25:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-06 22:25:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:18,025 INFO L225 Difference]: With dead ends: 95 [2021-12-06 22:25:18,025 INFO L226 Difference]: Without dead ends: 95 [2021-12-06 22:25:18,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:18,025 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:18,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 246 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:25:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-06 22:25:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-06 22:25:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 81 states have internal predecessors, (83), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2021-12-06 22:25:18,028 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 45 [2021-12-06 22:25:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:18,028 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2021-12-06 22:25:18,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2021-12-06 22:25:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:25:18,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:18,029 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:18,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:18,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:18,230 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1744856553, now seen corresponding path program 1 times [2021-12-06 22:25:18,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592640640] [2021-12-06 22:25:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:18,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:18,235 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:18,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-06 22:25:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:18,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:25:18,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:18,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:18,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592640640] [2021-12-06 22:25:18,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592640640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:18,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:18,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:25:18,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961548380] [2021-12-06 22:25:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:18,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:18,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:18,838 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:18,851 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2021-12-06 22:25:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:25:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-12-06 22:25:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:18,852 INFO L225 Difference]: With dead ends: 102 [2021-12-06 22:25:18,853 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 22:25:18,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:18,853 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 41 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:18,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 211 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2021-12-06 22:25:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 22:25:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2021-12-06 22:25:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 82 states have internal predecessors, (85), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-12-06 22:25:18,855 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 46 [2021-12-06 22:25:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:18,855 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-12-06 22:25:18,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-12-06 22:25:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:25:18,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:18,856 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:18,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-12-06 22:25:19,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:19,057 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:19,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash -599225383, now seen corresponding path program 1 times [2021-12-06 22:25:19,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:19,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126903797] [2021-12-06 22:25:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:19,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:19,062 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:19,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-06 22:25:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:25:19,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:19,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:19,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126903797] [2021-12-06 22:25:19,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126903797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:19,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:19,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:25:19,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571309843] [2021-12-06 22:25:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:19,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:19,429 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:19,630 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2021-12-06 22:25:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:25:19,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-12-06 22:25:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:19,631 INFO L225 Difference]: With dead ends: 150 [2021-12-06 22:25:19,631 INFO L226 Difference]: Without dead ends: 150 [2021-12-06 22:25:19,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:25:19,631 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 118 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:19,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 353 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 156 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2021-12-06 22:25:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-06 22:25:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 104. [2021-12-06 22:25:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 88 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-12-06 22:25:19,634 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 46 [2021-12-06 22:25:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:19,634 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-12-06 22:25:19,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-12-06 22:25:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:25:19,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:19,634 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:19,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-06 22:25:19,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:19,836 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash -599225382, now seen corresponding path program 1 times [2021-12-06 22:25:19,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:19,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169133141] [2021-12-06 22:25:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:19,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:19,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:19,840 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:19,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-06 22:25:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:19,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 22:25:19,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:25:20,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:20,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:25:20,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-12-06 22:25:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:21,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:21,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169133141] [2021-12-06 22:25:21,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169133141] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:25:21,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:21,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-06 22:25:21,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339603860] [2021-12-06 22:25:21,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:21,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:25:21,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:25:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:25:21,212 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 22:25:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:21,893 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-12-06 22:25:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:25:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 46 [2021-12-06 22:25:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:21,895 INFO L225 Difference]: With dead ends: 103 [2021-12-06 22:25:21,895 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 22:25:21,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:25:21,896 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 165 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:21,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 586 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:25:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 22:25:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-06 22:25:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.2) internal successors, (90), 87 states have internal predecessors, (90), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 22:25:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2021-12-06 22:25:21,898 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 46 [2021-12-06 22:25:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:21,898 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2021-12-06 22:25:21,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 22:25:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2021-12-06 22:25:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:25:21,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:21,899 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:21,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-06 22:25:22,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:22,100 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1239297928, now seen corresponding path program 1 times [2021-12-06 22:25:22,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774793918] [2021-12-06 22:25:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:22,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:22,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:22,105 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:22,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-06 22:25:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:22,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:25:22,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:22,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:22,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:22,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774793918] [2021-12-06 22:25:22,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774793918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:22,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:22,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:25:22,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024379685] [2021-12-06 22:25:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:22,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:25:22,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:25:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:22,277 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:22,297 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-12-06 22:25:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:25:22,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-12-06 22:25:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:22,298 INFO L225 Difference]: With dead ends: 122 [2021-12-06 22:25:22,298 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 22:25:22,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:22,299 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 33 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:22,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 292 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:25:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 22:25:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2021-12-06 22:25:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 79 states have internal predecessors, (81), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-12-06 22:25:22,301 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 46 [2021-12-06 22:25:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:22,301 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-12-06 22:25:22,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-12-06 22:25:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:25:22,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:22,302 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:22,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-12-06 22:25:22,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:22,503 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1744021614, now seen corresponding path program 1 times [2021-12-06 22:25:22,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:22,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242978092] [2021-12-06 22:25:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:22,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:22,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:22,508 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:22,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-06 22:25:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:22,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:25:22,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:22,688 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 [2021-12-06 22:25:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:22,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:22,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:22,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242978092] [2021-12-06 22:25:22,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242978092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:22,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:22,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:25:22,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644495955] [2021-12-06 22:25:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:22,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:25:22,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:25:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:25:22,736 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:22,844 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-12-06 22:25:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:25:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-12-06 22:25:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:22,845 INFO L225 Difference]: With dead ends: 92 [2021-12-06 22:25:22,845 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 22:25:22,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:25:22,845 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 5 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:22,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 258 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2021-12-06 22:25:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 22:25:22,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-06 22:25:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 78 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-12-06 22:25:22,847 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 47 [2021-12-06 22:25:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:22,848 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-12-06 22:25:22,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-12-06 22:25:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:25:22,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:22,848 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:22,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-12-06 22:25:23,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:23,050 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash -967522539, now seen corresponding path program 1 times [2021-12-06 22:25:23,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:23,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235635428] [2021-12-06 22:25:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:23,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:23,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:23,054 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:23,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-06 22:25:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:23,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:25:23,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:23,348 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:25:23,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 32 [2021-12-06 22:25:23,524 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 17 treesize of output 19 [2021-12-06 22:25:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:23,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:23,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:23,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235635428] [2021-12-06 22:25:23,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235635428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:23,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:23,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:25:23,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578248838] [2021-12-06 22:25:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:23,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:25:23,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:25:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:25:23,560 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:23,719 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2021-12-06 22:25:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:25:23,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-12-06 22:25:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:23,720 INFO L225 Difference]: With dead ends: 108 [2021-12-06 22:25:23,720 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 22:25:23,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:25:23,721 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 71 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:23,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 389 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 119 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2021-12-06 22:25:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 22:25:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2021-12-06 22:25:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 75 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-12-06 22:25:23,723 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 49 [2021-12-06 22:25:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:23,723 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-12-06 22:25:23,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-12-06 22:25:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 22:25:23,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:23,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:23,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-12-06 22:25:23,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:23,925 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 921264785, now seen corresponding path program 1 times [2021-12-06 22:25:23,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:23,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584754379] [2021-12-06 22:25:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:23,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:23,930 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:23,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-06 22:25:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:24,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 22:25:24,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:24,178 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 [2021-12-06 22:25:24,184 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 [2021-12-06 22:25:24,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:25:24,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:25:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:24,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:24,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-12-06 22:25:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:24,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:25:24,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:24,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:25:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:25:25,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584754379] [2021-12-06 22:25:25,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584754379] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:25,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:25:25,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 19 [2021-12-06 22:25:25,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123281352] [2021-12-06 22:25:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:25,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:25:25,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:25:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:25:25,099 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:25,798 INFO L93 Difference]: Finished difference Result 133 states and 132 transitions. [2021-12-06 22:25:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:25:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2021-12-06 22:25:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:25,800 INFO L225 Difference]: With dead ends: 133 [2021-12-06 22:25:25,800 INFO L226 Difference]: Without dead ends: 133 [2021-12-06 22:25:25,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:25:25,800 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 204 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:25,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 535 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:25:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-06 22:25:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 95. [2021-12-06 22:25:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 81 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-12-06 22:25:25,803 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 51 [2021-12-06 22:25:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:25,803 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-12-06 22:25:25,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-12-06 22:25:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 22:25:25,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:25,804 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:25,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-12-06 22:25:26,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:26,006 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554682, now seen corresponding path program 1 times [2021-12-06 22:25:26,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:26,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213325936] [2021-12-06 22:25:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:26,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:26,010 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:26,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-06 22:25:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:25:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:26,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:26,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:26,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213325936] [2021-12-06 22:25:26,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213325936] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:25:26,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:26,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-12-06 22:25:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045732185] [2021-12-06 22:25:26,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:25:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:25:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:26,321 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:26,338 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-12-06 22:25:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:25:26,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-12-06 22:25:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:26,339 INFO L225 Difference]: With dead ends: 94 [2021-12-06 22:25:26,340 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 22:25:26,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:25:26,340 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 28 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:26,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 225 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:25:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 22:25:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-06 22:25:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 80 states have internal predecessors, (82), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-12-06 22:25:26,342 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 52 [2021-12-06 22:25:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:26,342 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-12-06 22:25:26,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:25:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-12-06 22:25:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 22:25:26,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:26,343 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:26,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:26,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:26,544 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 572445235, now seen corresponding path program 1 times [2021-12-06 22:25:26,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:26,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829841171] [2021-12-06 22:25:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:26,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:26,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:26,549 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:26,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-06 22:25:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:25:26,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:25:27,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:27,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829841171] [2021-12-06 22:25:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829841171] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:25:27,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:27,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-12-06 22:25:27,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142666453] [2021-12-06 22:25:27,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:27,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:25:27,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:25:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:25:27,232 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 22:25:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:27,271 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-12-06 22:25:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:25:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 53 [2021-12-06 22:25:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:27,272 INFO L225 Difference]: With dead ends: 97 [2021-12-06 22:25:27,272 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 22:25:27,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:25:27,272 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:27,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 260 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 62 Unchecked, 0.0s Time] [2021-12-06 22:25:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 22:25:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-06 22:25:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 83 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-12-06 22:25:27,274 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 53 [2021-12-06 22:25:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:27,274 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-12-06 22:25:27,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 22:25:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-12-06 22:25:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 22:25:27,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:27,275 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:27,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-12-06 22:25:27,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:27,476 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -928199467, now seen corresponding path program 1 times [2021-12-06 22:25:27,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805952043] [2021-12-06 22:25:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:27,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:27,481 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:27,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-06 22:25:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:27,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:25:27,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:27,799 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 [2021-12-06 22:25:27,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:25:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:25:27,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:28,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:25:28,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:25:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:28,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805952043] [2021-12-06 22:25:28,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805952043] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:28,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:25:28,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 22 [2021-12-06 22:25:28,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637383018] [2021-12-06 22:25:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:28,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:25:28,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:25:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:25:28,530 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:29,124 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-12-06 22:25:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:25:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-12-06 22:25:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:29,129 INFO L225 Difference]: With dead ends: 96 [2021-12-06 22:25:29,129 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 22:25:29,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-12-06 22:25:29,130 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 201 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:29,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 440 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:25:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 22:25:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-06 22:25:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.12) internal successors, (84), 82 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-12-06 22:25:29,132 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 54 [2021-12-06 22:25:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:29,132 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-12-06 22:25:29,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-12-06 22:25:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 22:25:29,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:29,133 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:29,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:29,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:29,334 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash 565933224, now seen corresponding path program 1 times [2021-12-06 22:25:29,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:29,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006746240] [2021-12-06 22:25:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:29,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:29,339 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:29,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-12-06 22:25:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:25:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:29,467 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 [2021-12-06 22:25:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:25:29,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:25:29,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006746240] [2021-12-06 22:25:29,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006746240] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:25:29,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:25:29,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-12-06 22:25:29,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779623366] [2021-12-06 22:25:29,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:25:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:25:29,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:25:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:25:29,670 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:25:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:29,713 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-12-06 22:25:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:25:29,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2021-12-06 22:25:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:29,714 INFO L225 Difference]: With dead ends: 97 [2021-12-06 22:25:29,714 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 22:25:29,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:25:29,715 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 20 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:29,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 176 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 65 Unchecked, 0.0s Time] [2021-12-06 22:25:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 22:25:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-06 22:25:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.118421052631579) internal successors, (85), 83 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-12-06 22:25:29,717 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 54 [2021-12-06 22:25:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:29,717 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-12-06 22:25:29,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:25:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-12-06 22:25:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 22:25:29,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:29,718 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:29,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-12-06 22:25:29,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:29,919 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1290587706, now seen corresponding path program 1 times [2021-12-06 22:25:29,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:29,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219236413] [2021-12-06 22:25:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:29,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:29,924 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:29,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-06 22:25:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 22:25:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:30,650 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 [2021-12-06 22:25:30,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:25:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:25:31,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:31,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:25:31,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:25:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:25:32,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:32,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219236413] [2021-12-06 22:25:32,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219236413] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:32,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:25:32,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 31 [2021-12-06 22:25:32,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999495524] [2021-12-06 22:25:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:32,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:25:32,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:25:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:25:32,127 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:34,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:25:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:35,525 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-12-06 22:25:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:25:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2021-12-06 22:25:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:35,527 INFO L225 Difference]: With dead ends: 108 [2021-12-06 22:25:35,527 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 22:25:35,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 22:25:35,528 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 241 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:35,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 482 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 22:25:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 22:25:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-12-06 22:25:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.105263157894737) internal successors, (84), 82 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-12-06 22:25:35,530 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 55 [2021-12-06 22:25:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:35,530 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-12-06 22:25:35,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-12-06 22:25:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 22:25:35,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:35,530 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:35,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2021-12-06 22:25:35,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:35,732 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1353759607, now seen corresponding path program 1 times [2021-12-06 22:25:35,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:35,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385325394] [2021-12-06 22:25:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:35,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:35,737 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:35,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-12-06 22:25:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:36,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:25:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:36,269 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 [2021-12-06 22:25:36,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-06 22:25:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:25:36,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:25:36,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-12-06 22:25:36,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-12-06 22:25:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:25:37,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:25:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385325394] [2021-12-06 22:25:37,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385325394] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:37,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:25:37,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 24 [2021-12-06 22:25:37,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398370059] [2021-12-06 22:25:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:25:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:25:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:25:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:25:37,004 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:37,838 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2021-12-06 22:25:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:25:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 56 [2021-12-06 22:25:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:37,840 INFO L225 Difference]: With dead ends: 108 [2021-12-06 22:25:37,840 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 22:25:37,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2021-12-06 22:25:37,841 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 178 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:37,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 640 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:25:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 22:25:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-12-06 22:25:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 82 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:25:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-12-06 22:25:37,844 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 56 [2021-12-06 22:25:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:37,844 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-12-06 22:25:37,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:25:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-12-06 22:25:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 22:25:37,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:37,845 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:37,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-12-06 22:25:38,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:38,046 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 22:25:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1353513335, now seen corresponding path program 1 times [2021-12-06 22:25:38,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:25:38,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380794661] [2021-12-06 22:25:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:38,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:25:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:25:38,051 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:25:38,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-06 22:25:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:25:38,216 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:25:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:25:38,371 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 22:25:38,371 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 22:25:38,372 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (29 of 30 remaining) [2021-12-06 22:25:38,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (28 of 30 remaining) [2021-12-06 22:25:38,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (27 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 30 remaining) [2021-12-06 22:25:38,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (18 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (17 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (16 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (13 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (12 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (11 of 30 remaining) [2021-12-06 22:25:38,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (10 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE (9 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE (8 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (7 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (6 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (5 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (4 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (3 of 30 remaining) [2021-12-06 22:25:38,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (2 of 30 remaining) [2021-12-06 22:25:38,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_i2c_set_clientdataErr0REQUIRES_VIOLATION (1 of 30 remaining) [2021-12-06 22:25:38,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_i2c_set_clientdataErr1REQUIRES_VIOLATION (0 of 30 remaining) [2021-12-06 22:25:38,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-12-06 22:25:38,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:25:38,586 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:25:38,596 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:25:38,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:25:38 BoogieIcfgContainer [2021-12-06 22:25:38,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:25:38,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:25:38,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:25:38,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:25:38,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:22:15" (3/4) ... [2021-12-06 22:25:38,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 22:25:38,697 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:25:38,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:25:38,698 INFO L158 Benchmark]: Toolchain (without parser) took 204509.06ms. Allocated memory was 56.6MB in the beginning and 94.4MB in the end (delta: 37.7MB). Free memory was 33.5MB in the beginning and 61.6MB in the end (delta: -28.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,698 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:25:38,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.04ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 33.3MB in the beginning and 41.7MB in the end (delta: -8.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.85ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 58.9MB in the end (delta: -17.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,699 INFO L158 Benchmark]: Boogie Preprocessor took 23.05ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 57.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,699 INFO L158 Benchmark]: RCFGBuilder took 381.40ms. Allocated memory is still 77.6MB. Free memory was 57.2MB in the beginning and 40.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,699 INFO L158 Benchmark]: TraceAbstraction took 203493.79ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.1MB in the beginning and 67.0MB in the end (delta: -26.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,699 INFO L158 Benchmark]: Witness Printer took 43.22ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 61.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 22:25:38,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.04ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 33.3MB in the beginning and 41.7MB in the end (delta: -8.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.85ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 58.9MB in the end (delta: -17.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.05ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 57.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.40ms. Allocated memory is still 77.6MB. Free memory was 57.2MB in the beginning and 40.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 203493.79ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.1MB in the beginning and 67.0MB in the end (delta: -26.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 43.22ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 61.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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 - CounterExampleResult [Line: 799]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L824] CALL entry_point() [L803] CALL, EXPR ldv_malloc(sizeof(struct ldv_i2c_client)) VAL [\old(size)=20, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L803] RET, EXPR ldv_malloc(sizeof(struct ldv_i2c_client)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_i2c_client))={10:0}] [L803] struct ldv_i2c_client *c11 = (struct ldv_i2c_client *)ldv_malloc(sizeof(struct ldv_i2c_client)); [L804] COND FALSE !(!c11) VAL [c11={10:0}, ldv_global_msg_list={1:0}] [L806] CALL, EXPR ldv_malloc(sizeof(struct ldv_m88ts2022_config)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L806] RET, EXPR ldv_malloc(sizeof(struct ldv_m88ts2022_config)) VAL [c11={10:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_m88ts2022_config))={5:0}] [L805-L806] struct ldv_m88ts2022_config *cfg = (struct ldv_m88ts2022_config *) ldv_malloc(sizeof(struct ldv_m88ts2022_config)); [L807] COND FALSE !(!cfg) VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}] [L808] c11->dev.platform_data = cfg VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}] [L810] CALL, EXPR ldv_malloc(sizeof(struct ldv_dvb_frontend)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L810] RET, EXPR ldv_malloc(sizeof(struct ldv_dvb_frontend)) VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_dvb_frontend))={2:0}] [L809-L810] struct ldv_dvb_frontend *fe = (struct ldv_dvb_frontend *) ldv_malloc(sizeof(struct ldv_dvb_frontend)); [L811] COND FALSE !(!fe) VAL [c11={10:0}, cfg={5:0}, fe={2:0}, ldv_global_msg_list={1:0}] [L812] cfg->fe = fe VAL [c11={10:0}, cfg={5:0}, fe={2:0}, ldv_global_msg_list={1:0}] [L813] CALL alloc_2_11(c11) [L784] EXPR client->dev.platform_data VAL [client={10:0}, client={10:0}, client->dev.platform_data={5:0}, ldv_global_msg_list={1:0}] [L784] struct ldv_m88ts2022_config *cfg = client->dev.platform_data; [L785] EXPR cfg->fe VAL [cfg={5:0}, cfg->fe={2:0}, client={10:0}, client={10:0}, ldv_global_msg_list={1:0}] [L785] struct ldv_dvb_frontend *fe = cfg->fe; [L786] CALL, EXPR ldv_malloc(sizeof(struct Data11)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct Data11)) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct Data11))={3:0}] [L786] struct Data11 *priv = (struct Data11*)ldv_malloc(sizeof(struct Data11)); [L787] COND FALSE !(!priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L788] fe->tuner_priv = priv VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L789] CALL ldv_i2c_set_clientdata(client, priv) VAL [ldv_global_msg_list={1:0}] [L778] CALL ldv_dev_set_drvdata(&dev->dev, data) [L623] dev->driver_data = data VAL [data={3:0}, data={3:0}, dev={10:0}, dev={10:0}, ldv_global_msg_list={1:0}] [L778] RET ldv_dev_set_drvdata(&dev->dev, data) [L789] RET ldv_i2c_set_clientdata(client, priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) [L791] return 0; VAL [\result=0, cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L813] RET alloc_2_11(c11) [L814] CALL free_11(c11) [L797] CALL, EXPR ldv_i2c_get_clientdata(client) [L774] CALL, EXPR ldv_dev_get_drvdata(&dev->dev) [L619] EXPR dev->driver_data VAL [dev={10:0}, dev={10:0}, dev->driver_data={3:0}, ldv_global_msg_list={1:0}] [L619] return dev->driver_data; [L774] RET, EXPR ldv_dev_get_drvdata(&dev->dev) [L774] return ldv_dev_get_drvdata(&dev->dev); [L797] RET, EXPR ldv_i2c_get_clientdata(client) [L797] void *priv = (struct Data11*)ldv_i2c_get_clientdata(client); [L798] COND TRUE \read(*priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 799]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 799]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 203.4s, OverallIterations: 41, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 51.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 3601 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3532 mSDsluCounter, 19345 SdHoareTripleChecker+Invalid, 11.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2926 IncrementalHoareTripleChecker+Unchecked, 15987 mSDsCounter, 397 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8269 IncrementalHoareTripleChecker+Invalid, 11593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 397 mSolverCounterUnsat, 3358 mSDtfsCounter, 8269 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2532 GetRequests, 1852 SyntacticMatches, 79 SemanticMatches, 601 ConstructedPredicates, 10 IntricatePredicates, 5 DeprecatedPredicates, 3716 ImplicationChecksByTransitivity, 159.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=10, InterpolantAutomatonStates: 384, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 1228 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 134.7s InterpolantComputationTime, 1809 NumberOfCodeBlocks, 1809 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2197 ConstructedInterpolants, 354 QuantifiedInterpolants, 17514 SizeOfPredicates, 386 NumberOfNonLiveVariables, 6944 ConjunctsInSsa, 1080 ConjunctsInUnsatCore, 63 InterpolantComputations, 21 PerfectInterpolantSequences, 820/1060 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 proved your program to be incorrect! [2021-12-06 22:25:38,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c5e3669-6028-46c6-9db2-21c8c224c97c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)