./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer --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 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer --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 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:56:46,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:56:46,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:56:46,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:56:46,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:56:46,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:56:46,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:56:46,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:56:46,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:56:46,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:56:46,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:56:46,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:56:46,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:56:46,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:56:46,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:56:46,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:56:46,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:56:46,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:56:46,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:56:46,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:56:46,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:56:46,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:56:46,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:56:46,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:56:46,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:56:46,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:56:46,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:56:46,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:56:46,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:56:46,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:56:46,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:56:46,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:56:46,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:56:46,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:56:46,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:56:46,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:56:46,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:56:46,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:56:46,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:56:46,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:56:46,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:56:46,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:56:46,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:56:46,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:56:46,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:56:46,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:56:46,623 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:56:46,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:56:46,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:56:46,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:56:46,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:56:46,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:56:46,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:56:46,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:56:46,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:56:46,626 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:56:46,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:56:46,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:56:46,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:56:46,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:56:46,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:56:46,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:56:46,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:56:46,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:56:46,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:56:46,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:56:46,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:56:46,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:56:46,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:56:46,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:56:46,630 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-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-11-30 00:56:46,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:56:46,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:56:46,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:56:46,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:56:46,945 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:56:46,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-11-30 00:56:47,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/22ac2d54b/bf6bfa52cf4e401bb82497a063ea7363/FLAGb3f98ebd1 [2020-11-30 00:56:47,676 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:56:47,677 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-11-30 00:56:47,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/22ac2d54b/bf6bfa52cf4e401bb82497a063ea7363/FLAGb3f98ebd1 [2020-11-30 00:56:48,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/22ac2d54b/bf6bfa52cf4e401bb82497a063ea7363 [2020-11-30 00:56:48,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:56:48,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:56:48,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:48,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:56:48,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:56:48,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7bb2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48, skipping insertion in model container [2020-11-30 00:56:48,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:56:48,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:56:48,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:48,434 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:56:48,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:48,564 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:56:48,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48 WrapperNode [2020-11-30 00:56:48,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:48,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:56:48,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:56:48,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:56:48,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... [2020-11-30 00:56:48,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:56:48,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:56:48,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:56:48,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:56:48,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:56:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:56:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:56:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 00:56:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:56:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 00:56:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 00:56:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 00:56:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 00:56:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 00:56:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 00:56:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 00:56:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 00:56:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 00:56:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 00:56:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 00:56:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 00:56:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 00:56:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 00:56:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 00:56:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 00:56:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 00:56:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 00:56:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 00:56:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 00:56:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 00:56:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 00:56:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 00:56:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 00:56:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 00:56:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 00:56:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 00:56:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 00:56:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:56:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 00:56:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 00:56:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 00:56:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 00:56:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 00:56:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 00:56:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 00:56:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 00:56:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 00:56:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 00:56:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 00:56:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 00:56:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 00:56:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 00:56:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 00:56:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 00:56:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 00:56:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 00:56:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 00:56:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 00:56:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 00:56:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 00:56:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 00:56:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 00:56:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 00:56:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 00:56:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:56:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:56:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:56:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 00:56:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:56:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 00:56:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:56:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:56:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:56:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:56:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:56:49,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:56:49,743 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:56:49,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:49 BoogieIcfgContainer [2020-11-30 00:56:49,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:56:49,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:56:49,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:56:49,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:56:49,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:56:48" (1/3) ... [2020-11-30 00:56:49,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43162285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:49, skipping insertion in model container [2020-11-30 00:56:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:48" (2/3) ... [2020-11-30 00:56:49,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43162285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:49, skipping insertion in model container [2020-11-30 00:56:49,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:49" (3/3) ... [2020-11-30 00:56:49,761 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-11-30 00:56:49,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:56:49,779 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2020-11-30 00:56:49,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2020-11-30 00:56:49,812 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:56:49,813 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:56:49,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:56:49,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:56:49,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:56:49,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:56:49,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:56:49,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:56:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-11-30 00:56:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:56:49,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:49,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:49,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash -617895342, now seen corresponding path program 1 times [2020-11-30 00:56:49,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:49,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177359596] [2020-11-30 00:56:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177359596] [2020-11-30 00:56:50,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:50,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:50,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002823775] [2020-11-30 00:56:50,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:56:50,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:56:50,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:50,120 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 4 states. [2020-11-30 00:56:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:50,597 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2020-11-30 00:56:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:56:50,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:56:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:50,620 INFO L225 Difference]: With dead ends: 141 [2020-11-30 00:56:50,620 INFO L226 Difference]: Without dead ends: 137 [2020-11-30 00:56:50,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-30 00:56:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2020-11-30 00:56:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-30 00:56:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2020-11-30 00:56:50,712 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 7 [2020-11-30 00:56:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:50,712 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2020-11-30 00:56:50,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:56:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2020-11-30 00:56:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:56:50,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:50,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:50,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:56:50,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash -617895341, now seen corresponding path program 1 times [2020-11-30 00:56:50,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:50,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150460643] [2020-11-30 00:56:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:50,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150460643] [2020-11-30 00:56:50,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:50,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:50,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085059030] [2020-11-30 00:56:50,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:56:50,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:50,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:56:50,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:50,857 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 4 states. [2020-11-30 00:56:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:51,241 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-11-30 00:56:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:56:51,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:56:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:51,243 INFO L225 Difference]: With dead ends: 150 [2020-11-30 00:56:51,243 INFO L226 Difference]: Without dead ends: 150 [2020-11-30 00:56:51,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-30 00:56:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2020-11-30 00:56:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-30 00:56:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2020-11-30 00:56:51,262 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 7 [2020-11-30 00:56:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:51,263 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2020-11-30 00:56:51,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:56:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2020-11-30 00:56:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:56:51,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:51,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:51,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:56:51,264 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1237136187, now seen corresponding path program 1 times [2020-11-30 00:56:51,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:51,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937977589] [2020-11-30 00:56:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:51,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937977589] [2020-11-30 00:56:51,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:51,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:56:51,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481905572] [2020-11-30 00:56:51,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:56:51,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:56:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:56:51,456 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 5 states. [2020-11-30 00:56:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:51,895 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2020-11-30 00:56:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:56:51,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 00:56:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:51,897 INFO L225 Difference]: With dead ends: 142 [2020-11-30 00:56:51,897 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 00:56:51,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:56:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 00:56:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2020-11-30 00:56:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-30 00:56:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2020-11-30 00:56:51,915 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 13 [2020-11-30 00:56:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:51,915 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2020-11-30 00:56:51,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:56:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2020-11-30 00:56:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:56:51,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:51,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:51,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:56:51,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1237136188, now seen corresponding path program 1 times [2020-11-30 00:56:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:51,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557330384] [2020-11-30 00:56:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:52,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557330384] [2020-11-30 00:56:52,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:52,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:56:52,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187409732] [2020-11-30 00:56:52,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:56:52,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:52,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:56:52,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:56:52,147 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 7 states. [2020-11-30 00:56:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:52,651 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2020-11-30 00:56:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:56:52,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-30 00:56:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:52,653 INFO L225 Difference]: With dead ends: 169 [2020-11-30 00:56:52,654 INFO L226 Difference]: Without dead ends: 169 [2020-11-30 00:56:52,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:56:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-11-30 00:56:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-11-30 00:56:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-30 00:56:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2020-11-30 00:56:52,669 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 13 [2020-11-30 00:56:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:52,671 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2020-11-30 00:56:52,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:56:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2020-11-30 00:56:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:56:52,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:52,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:52,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:56:52,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash -818065122, now seen corresponding path program 1 times [2020-11-30 00:56:52,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:52,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057232264] [2020-11-30 00:56:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:52,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057232264] [2020-11-30 00:56:52,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:52,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:56:52,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251126551] [2020-11-30 00:56:52,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:56:52,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:52,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:56:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:56:52,781 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand 6 states. [2020-11-30 00:56:53,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:53,210 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2020-11-30 00:56:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:56:53,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:56:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:53,212 INFO L225 Difference]: With dead ends: 194 [2020-11-30 00:56:53,212 INFO L226 Difference]: Without dead ends: 194 [2020-11-30 00:56:53,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:56:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-30 00:56:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 138. [2020-11-30 00:56:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-30 00:56:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2020-11-30 00:56:53,223 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 15 [2020-11-30 00:56:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:53,224 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2020-11-30 00:56:53,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:56:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2020-11-30 00:56:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:56:53,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:53,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:53,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:56:53,225 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash -818065121, now seen corresponding path program 1 times [2020-11-30 00:56:53,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:53,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320220232] [2020-11-30 00:56:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:53,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320220232] [2020-11-30 00:56:53,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:53,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:56:53,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362173354] [2020-11-30 00:56:53,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:56:53,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:53,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:56:53,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:56:53,346 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand 6 states. [2020-11-30 00:56:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:53,927 INFO L93 Difference]: Finished difference Result 217 states and 243 transitions. [2020-11-30 00:56:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:56:53,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:56:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:53,929 INFO L225 Difference]: With dead ends: 217 [2020-11-30 00:56:53,929 INFO L226 Difference]: Without dead ends: 217 [2020-11-30 00:56:53,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:56:53,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-30 00:56:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2020-11-30 00:56:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-30 00:56:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2020-11-30 00:56:53,937 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 15 [2020-11-30 00:56:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:53,938 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2020-11-30 00:56:53,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:56:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2020-11-30 00:56:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:56:53,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:53,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:53,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:56:53,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash -187070592, now seen corresponding path program 1 times [2020-11-30 00:56:53,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:53,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920294832] [2020-11-30 00:56:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:54,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920294832] [2020-11-30 00:56:54,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:54,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:56:54,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314148793] [2020-11-30 00:56:54,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:56:54,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:56:54,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:56:54,023 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand 5 states. [2020-11-30 00:56:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:54,318 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-11-30 00:56:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:56:54,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:56:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:54,320 INFO L225 Difference]: With dead ends: 151 [2020-11-30 00:56:54,320 INFO L226 Difference]: Without dead ends: 151 [2020-11-30 00:56:54,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:56:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-30 00:56:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-11-30 00:56:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-30 00:56:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2020-11-30 00:56:54,326 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 17 [2020-11-30 00:56:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:54,327 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2020-11-30 00:56:54,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:56:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2020-11-30 00:56:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:56:54,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:54,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:54,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:56:54,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1688417841, now seen corresponding path program 1 times [2020-11-30 00:56:54,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:54,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83931757] [2020-11-30 00:56:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83931757] [2020-11-30 00:56:54,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:54,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:56:54,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193538440] [2020-11-30 00:56:54,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:56:54,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:56:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:56:54,504 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 7 states. [2020-11-30 00:56:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:54,957 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2020-11-30 00:56:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:56:54,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-30 00:56:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:54,959 INFO L225 Difference]: With dead ends: 194 [2020-11-30 00:56:54,959 INFO L226 Difference]: Without dead ends: 194 [2020-11-30 00:56:54,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:56:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-30 00:56:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 141. [2020-11-30 00:56:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 00:56:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2020-11-30 00:56:54,966 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 20 [2020-11-30 00:56:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:54,966 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2020-11-30 00:56:54,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:56:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2020-11-30 00:56:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:56:54,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:54,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:54,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:56:54,967 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:54,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1608040737, now seen corresponding path program 1 times [2020-11-30 00:56:54,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:54,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323641976] [2020-11-30 00:56:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:55,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323641976] [2020-11-30 00:56:55,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:55,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 00:56:55,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318259005] [2020-11-30 00:56:55,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:56:55,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:56:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:56:55,252 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 11 states. [2020-11-30 00:56:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:56,367 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2020-11-30 00:56:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:56:56,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-11-30 00:56:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:56,368 INFO L225 Difference]: With dead ends: 145 [2020-11-30 00:56:56,368 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 00:56:56,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:56:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 00:56:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2020-11-30 00:56:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-30 00:56:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-11-30 00:56:56,376 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 19 [2020-11-30 00:56:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:56,377 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-11-30 00:56:56,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:56:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-11-30 00:56:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:56:56,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:56,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:56,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:56:56,383 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:56,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1608040736, now seen corresponding path program 1 times [2020-11-30 00:56:56,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:56,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305164992] [2020-11-30 00:56:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:56,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:56,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305164992] [2020-11-30 00:56:56,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:56,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 00:56:56,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950133552] [2020-11-30 00:56:56,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:56:56,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:56,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:56:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:56:56,567 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 10 states. [2020-11-30 00:56:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:57,165 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-11-30 00:56:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:56:57,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-30 00:56:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:57,166 INFO L225 Difference]: With dead ends: 137 [2020-11-30 00:56:57,167 INFO L226 Difference]: Without dead ends: 137 [2020-11-30 00:56:57,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:56:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-30 00:56:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-11-30 00:56:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-30 00:56:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2020-11-30 00:56:57,172 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 19 [2020-11-30 00:56:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:57,172 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2020-11-30 00:56:57,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:56:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2020-11-30 00:56:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:56:57,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:57,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:57,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:56:57,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:57,174 INFO L82 PathProgramCache]: Analyzing trace with hash 345747901, now seen corresponding path program 1 times [2020-11-30 00:56:57,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:57,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49657923] [2020-11-30 00:56:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:57,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49657923] [2020-11-30 00:56:57,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:57,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:56:57,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178164684] [2020-11-30 00:56:57,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:56:57,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:56:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:56:57,350 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand 6 states. [2020-11-30 00:56:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:57,701 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-11-30 00:56:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:56:57,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 00:56:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:57,703 INFO L225 Difference]: With dead ends: 140 [2020-11-30 00:56:57,703 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 00:56:57,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:56:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 00:56:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2020-11-30 00:56:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-30 00:56:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-11-30 00:56:57,711 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 24 [2020-11-30 00:56:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:57,711 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-11-30 00:56:57,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:56:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-11-30 00:56:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:56:57,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:57,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:57,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:56:57,718 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:56:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1850084719, now seen corresponding path program 1 times [2020-11-30 00:56:57,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:57,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895473623] [2020-11-30 00:56:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:57,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:57,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:57,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:56:57,800 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:56:57,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:56:57,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:56:57 BoogieIcfgContainer [2020-11-30 00:56:57,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:56:57,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:56:57,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:56:57,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:56:57,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:49" (3/4) ... [2020-11-30 00:56:57,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:56:57,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:56:57,864 INFO L168 Benchmark]: Toolchain (without parser) took 9850.26 ms. Allocated memory was 83.9 MB in the beginning and 180.4 MB in the end (delta: 96.5 MB). Free memory was 50.4 MB in the beginning and 139.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:57,865 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:57,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.64 ms. Allocated memory is still 83.9 MB. Free memory was 50.2 MB in the beginning and 50.2 MB in the end (delta: 85.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:57,872 INFO L168 Benchmark]: Boogie Preprocessor took 111.37 ms. Allocated memory is still 83.9 MB. Free memory was 49.8 MB in the beginning and 47.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:57,872 INFO L168 Benchmark]: RCFGBuilder took 1068.27 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 34.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:57,873 INFO L168 Benchmark]: TraceAbstraction took 8103.06 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 34.0 MB in the beginning and 139.0 MB in the end (delta: -105.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:57,873 INFO L168 Benchmark]: Witness Printer took 9.11 ms. Allocated memory is still 180.4 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:57,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.64 ms. Allocated memory is still 83.9 MB. Free memory was 50.2 MB in the beginning and 50.2 MB in the end (delta: 85.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.37 ms. Allocated memory is still 83.9 MB. Free memory was 49.8 MB in the beginning and 47.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1068.27 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 34.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8103.06 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 34.0 MB in the beginning and 139.0 MB in the end (delta: -105.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 9.11 ms. Allocated memory is still 180.4 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1051] COND TRUE !(end->next) [L1051] CALL reach_error() [L991] COND FALSE !(0) [L991] __assert_fail ("0", "dll-rb-cnstr_1-2.c", 11, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 63 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 913 SDtfs, 1560 SDslu, 1481 SDs, 0 SdLazy, 4007 SolverSat, 195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 280 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 14754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:57:00,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:57:00,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:57:00,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:57:00,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:57:00,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:57:00,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:57:00,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:57:00,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:57:00,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:57:00,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:57:00,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:57:00,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:57:00,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:57:00,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:57:00,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:57:00,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:57:00,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:57:00,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:57:00,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:57:00,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:57:00,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:57:00,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:57:00,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:57:00,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:57:00,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:57:00,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:57:00,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:57:00,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:57:00,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:57:00,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:57:00,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:57:00,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:57:00,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:57:00,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:57:00,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:57:00,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:57:00,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:57:00,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:57:00,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:57:00,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:57:00,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-30 00:57:00,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:57:00,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:57:00,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:57:00,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:57:00,605 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:57:00,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:57:00,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:57:00,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:57:00,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:57:00,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:57:00,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:57:00,607 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:57:00,607 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:57:00,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:57:00,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:57:00,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:57:00,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:57:00,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:57:00,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:57:00,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:57:00,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:57:00,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:57:00,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:57:00,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:57:00,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:57:00,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:57:00,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:57:00,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:57:00,611 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:57:00,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:57:00,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:57:00,611 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-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-11-30 00:57:01,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:57:01,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:57:01,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:57:01,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:57:01,046 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:57:01,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-11-30 00:57:01,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/989f23a61/aee2e3d2a8984b2381a63c37ab01c428/FLAG1b0974f97 [2020-11-30 00:57:01,727 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:57:01,728 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-11-30 00:57:01,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/989f23a61/aee2e3d2a8984b2381a63c37ab01c428/FLAG1b0974f97 [2020-11-30 00:57:02,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/data/989f23a61/aee2e3d2a8984b2381a63c37ab01c428 [2020-11-30 00:57:02,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:57:02,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:57:02,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:02,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:57:02,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:57:02,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea2658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02, skipping insertion in model container [2020-11-30 00:57:02,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:57:02,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:57:02,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:02,483 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:57:02,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:02,620 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:57:02,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02 WrapperNode [2020-11-30 00:57:02,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:02,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:57:02,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:57:02,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:57:02,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... [2020-11-30 00:57:02,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:57:02,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:57:02,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:57:02,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:57:02,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:57:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:57:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:57:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-30 00:57:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 00:57:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:57:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 00:57:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 00:57:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 00:57:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 00:57:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 00:57:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 00:57:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 00:57:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 00:57:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 00:57:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 00:57:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 00:57:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 00:57:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 00:57:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 00:57:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 00:57:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 00:57:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 00:57:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 00:57:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 00:57:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 00:57:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 00:57:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 00:57:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 00:57:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 00:57:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 00:57:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 00:57:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 00:57:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 00:57:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 00:57:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 00:57:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 00:57:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 00:57:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 00:57:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-30 00:57:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-30 00:57:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-30 00:57:03,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:57:03,959 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:57:03,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:03 BoogieIcfgContainer [2020-11-30 00:57:03,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:57:03,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:57:03,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:57:03,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:57:03,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:57:02" (1/3) ... [2020-11-30 00:57:03,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:57:03, skipping insertion in model container [2020-11-30 00:57:03,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:02" (2/3) ... [2020-11-30 00:57:03,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:57:03, skipping insertion in model container [2020-11-30 00:57:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:03" (3/3) ... [2020-11-30 00:57:03,976 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-11-30 00:57:03,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:57:04,002 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2020-11-30 00:57:04,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2020-11-30 00:57:04,046 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:57:04,046 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:57:04,046 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:57:04,047 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:57:04,047 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:57:04,047 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:57:04,047 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:57:04,047 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:57:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-11-30 00:57:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:57:04,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:04,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:04,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash 603083622, now seen corresponding path program 1 times [2020-11-30 00:57:04,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:04,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712088654] [2020-11-30 00:57:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:04,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:57:04,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:04,378 INFO L384 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 [2020-11-30 00:57:04,379 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:04,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:04,386 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:04,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:57:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:04,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:04,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712088654] [2020-11-30 00:57:04,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:04,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:57:04,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367714776] [2020-11-30 00:57:04,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:57:04,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:04,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:57:04,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:57:04,453 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 3 states. [2020-11-30 00:57:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:04,858 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-11-30 00:57:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:57:04,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 00:57:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:04,873 INFO L225 Difference]: With dead ends: 139 [2020-11-30 00:57:04,874 INFO L226 Difference]: Without dead ends: 135 [2020-11-30 00:57:04,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:57:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-30 00:57:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-11-30 00:57:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-30 00:57:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2020-11-30 00:57:04,919 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 7 [2020-11-30 00:57:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:04,920 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2020-11-30 00:57:04,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:57:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2020-11-30 00:57:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:57:04,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:04,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:05,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:57:05,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:05,136 INFO L82 PathProgramCache]: Analyzing trace with hash 603083623, now seen corresponding path program 1 times [2020-11-30 00:57:05,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:05,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022167358] [2020-11-30 00:57:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:05,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:57:05,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:05,290 INFO L384 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 [2020-11-30 00:57:05,290 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:05,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:05,326 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:05,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:57:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:05,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:05,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022167358] [2020-11-30 00:57:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:05,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 00:57:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989987172] [2020-11-30 00:57:05,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:57:05,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:57:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:57:05,429 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand 4 states. [2020-11-30 00:57:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:05,943 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-11-30 00:57:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:57:05,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:57:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:05,946 INFO L225 Difference]: With dead ends: 148 [2020-11-30 00:57:05,947 INFO L226 Difference]: Without dead ends: 148 [2020-11-30 00:57:05,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:57:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-30 00:57:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 135. [2020-11-30 00:57:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-30 00:57:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2020-11-30 00:57:05,971 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 7 [2020-11-30 00:57:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:05,971 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2020-11-30 00:57:05,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:57:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2020-11-30 00:57:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:57:05,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:05,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:06,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:57:06,189 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash -738246619, now seen corresponding path program 1 times [2020-11-30 00:57:06,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:06,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816374996] [2020-11-30 00:57:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:06,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:57:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:06,377 INFO L384 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 [2020-11-30 00:57:06,378 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:06,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:06,380 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:06,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:57:06,417 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:06,418 INFO L384 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 14 treesize of output 30 [2020-11-30 00:57:06,419 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:06,444 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-30 00:57:06,445 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:57:06,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-11-30 00:57:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:06,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:06,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816374996] [2020-11-30 00:57:06,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:06,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:57:06,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106964312] [2020-11-30 00:57:06,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:57:06,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:06,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:57:06,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:57:06,486 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 4 states. [2020-11-30 00:57:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:07,027 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-11-30 00:57:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:57:07,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:57:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:07,029 INFO L225 Difference]: With dead ends: 140 [2020-11-30 00:57:07,030 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 00:57:07,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:57:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 00:57:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2020-11-30 00:57:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 00:57:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-11-30 00:57:07,040 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 12 [2020-11-30 00:57:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:07,040 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-11-30 00:57:07,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:57:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-11-30 00:57:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:57:07,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:07,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:07,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:57:07,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash -738246618, now seen corresponding path program 1 times [2020-11-30 00:57:07,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:07,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394135472] [2020-11-30 00:57:07,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:07,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:57:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:07,431 INFO L384 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 [2020-11-30 00:57:07,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:07,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:07,438 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:07,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:57:07,496 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:07,497 INFO L384 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 28 [2020-11-30 00:57:07,497 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:07,525 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-30 00:57:07,526 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:57:07,527 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-30 00:57:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:07,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:07,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394135472] [2020-11-30 00:57:07,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:07,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-11-30 00:57:07,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111216570] [2020-11-30 00:57:07,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:57:07,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:57:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:57:07,851 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 7 states. [2020-11-30 00:57:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:09,138 INFO L93 Difference]: Finished difference Result 175 states and 190 transitions. [2020-11-30 00:57:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:57:09,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-30 00:57:09,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:09,142 INFO L225 Difference]: With dead ends: 175 [2020-11-30 00:57:09,142 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 00:57:09,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:57:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 00:57:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 124. [2020-11-30 00:57:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-30 00:57:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-11-30 00:57:09,168 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 12 [2020-11-30 00:57:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:09,174 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-11-30 00:57:09,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:57:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-11-30 00:57:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:57:09,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:09,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:09,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:57:09,388 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash -785396184, now seen corresponding path program 1 times [2020-11-30 00:57:09,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:09,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255115041] [2020-11-30 00:57:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:09,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:57:09,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:09,546 INFO L384 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 [2020-11-30 00:57:09,547 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:09,550 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:57:09,570 INFO L384 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 [2020-11-30 00:57:09,570 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:09,579 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-30 00:57:09,597 INFO L384 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 19 treesize of output 11 [2020-11-30 00:57:09,598 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:09,600 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:09,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-30 00:57:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:09,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:09,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255115041] [2020-11-30 00:57:09,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:09,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 00:57:09,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084369031] [2020-11-30 00:57:09,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:57:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:09,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:57:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:57:09,623 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 5 states. [2020-11-30 00:57:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:10,256 INFO L93 Difference]: Finished difference Result 175 states and 197 transitions. [2020-11-30 00:57:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:57:10,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:57:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:10,258 INFO L225 Difference]: With dead ends: 175 [2020-11-30 00:57:10,258 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 00:57:10,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:57:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 00:57:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 123. [2020-11-30 00:57:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-30 00:57:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-11-30 00:57:10,266 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 14 [2020-11-30 00:57:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:10,266 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-11-30 00:57:10,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:57:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-11-30 00:57:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:57:10,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:10,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:10,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:57:10,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:10,487 INFO L82 PathProgramCache]: Analyzing trace with hash -785396183, now seen corresponding path program 1 times [2020-11-30 00:57:10,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:10,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334595174] [2020-11-30 00:57:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:57:10,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:10,622 INFO L384 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 [2020-11-30 00:57:10,622 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:10,627 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:57:10,646 INFO L384 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 [2020-11-30 00:57:10,646 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:10,661 INFO L384 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 [2020-11-30 00:57:10,662 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:10,671 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-30 00:57:10,709 INFO L384 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 [2020-11-30 00:57:10,709 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:10,719 INFO L384 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 19 treesize of output 11 [2020-11-30 00:57:10,720 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:10,725 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:10,725 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-30 00:57:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:10,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:10,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334595174] [2020-11-30 00:57:10,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:10,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 00:57:10,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743895156] [2020-11-30 00:57:10,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:57:10,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:10,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:57:10,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:57:10,897 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 8 states. [2020-11-30 00:57:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:12,103 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2020-11-30 00:57:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:57:12,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-30 00:57:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:12,105 INFO L225 Difference]: With dead ends: 198 [2020-11-30 00:57:12,105 INFO L226 Difference]: Without dead ends: 198 [2020-11-30 00:57:12,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:57:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-30 00:57:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 122. [2020-11-30 00:57:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-30 00:57:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2020-11-30 00:57:12,112 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 14 [2020-11-30 00:57:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:12,112 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2020-11-30 00:57:12,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:57:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2020-11-30 00:57:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:57:12,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:12,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:12,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:57:12,314 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:12,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1142053481, now seen corresponding path program 1 times [2020-11-30 00:57:12,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:12,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92240856] [2020-11-30 00:57:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:12,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:57:12,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:12,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:12,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92240856] [2020-11-30 00:57:12,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:12,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 00:57:12,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936644272] [2020-11-30 00:57:12,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:57:12,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:12,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:57:12,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:57:12,448 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand 4 states. [2020-11-30 00:57:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:12,751 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-11-30 00:57:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:57:12,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 00:57:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:12,753 INFO L225 Difference]: With dead ends: 143 [2020-11-30 00:57:12,753 INFO L226 Difference]: Without dead ends: 143 [2020-11-30 00:57:12,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:57:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-30 00:57:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 121. [2020-11-30 00:57:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-30 00:57:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-11-30 00:57:12,758 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 16 [2020-11-30 00:57:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:12,758 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-11-30 00:57:12,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:57:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-11-30 00:57:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:57:12,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:12,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:12,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:57:12,971 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1955707076, now seen corresponding path program 1 times [2020-11-30 00:57:12,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:12,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460997957] [2020-11-30 00:57:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:13,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:57:13,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:13,100 INFO L384 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 [2020-11-30 00:57:13,100 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:13,103 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:13,103 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:13,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-30 00:57:13,125 INFO L384 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 19 treesize of output 7 [2020-11-30 00:57:13,125 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:13,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:13,127 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:13,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-30 00:57:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:13,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:13,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460997957] [2020-11-30 00:57:13,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:13,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 00:57:13,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582407039] [2020-11-30 00:57:13,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:57:13,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:13,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:57:13,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:57:13,147 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 5 states. [2020-11-30 00:57:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:13,638 INFO L93 Difference]: Finished difference Result 178 states and 195 transitions. [2020-11-30 00:57:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:57:13,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-30 00:57:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:13,641 INFO L225 Difference]: With dead ends: 178 [2020-11-30 00:57:13,641 INFO L226 Difference]: Without dead ends: 178 [2020-11-30 00:57:13,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:57:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-30 00:57:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2020-11-30 00:57:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-30 00:57:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2020-11-30 00:57:13,647 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 19 [2020-11-30 00:57:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:13,648 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2020-11-30 00:57:13,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:57:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2020-11-30 00:57:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:57:13,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:13,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:13,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 00:57:13,862 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash -86276502, now seen corresponding path program 1 times [2020-11-30 00:57:13,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126477960] [2020-11-30 00:57:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:14,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:57:14,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:14,051 INFO L384 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 [2020-11-30 00:57:14,052 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,054 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:57:14,086 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,087 INFO L384 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 19 treesize of output 41 [2020-11-30 00:57:14,088 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,110 INFO L625 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2020-11-30 00:57:14,110 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-11-30 00:57:14,148 INFO L384 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 [2020-11-30 00:57:14,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,165 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,166 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:27 [2020-11-30 00:57:14,265 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,265 INFO L384 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 41 treesize of output 59 [2020-11-30 00:57:14,271 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-11-30 00:57:14,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 00:57:14,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,285 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,286 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:57:14,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-11-30 00:57:14,371 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,371 INFO L384 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 40 treesize of output 35 [2020-11-30 00:57:14,372 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:14,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:14,380 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:57:14,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:19 [2020-11-30 00:57:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:14,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:19,035 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.base))) c_main_~end~0.base) c_main_~end~0.offset)))) is different from false [2020-11-30 00:57:19,045 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:19,060 INFO L625 ElimStorePlain]: treesize reduction 27, result has 15.6 percent of original size [2020-11-30 00:57:19,060 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:19,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:5 [2020-11-30 00:57:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:19,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126477960] [2020-11-30 00:57:19,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:19,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2020-11-30 00:57:19,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700423911] [2020-11-30 00:57:19,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:57:19,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:19,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:57:19,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=138, Unknown=1, NotChecked=24, Total=210 [2020-11-30 00:57:19,081 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand 15 states. [2020-11-30 00:57:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:21,560 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions. [2020-11-30 00:57:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:57:21,561 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-30 00:57:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:21,562 INFO L225 Difference]: With dead ends: 188 [2020-11-30 00:57:21,562 INFO L226 Difference]: Without dead ends: 188 [2020-11-30 00:57:21,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=171, Invalid=384, Unknown=1, NotChecked=44, Total=600 [2020-11-30 00:57:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-30 00:57:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 125. [2020-11-30 00:57:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 00:57:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2020-11-30 00:57:21,567 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 18 [2020-11-30 00:57:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:21,568 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2020-11-30 00:57:21,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:57:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2020-11-30 00:57:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:57:21,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:21,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:21,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 00:57:21,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -86276501, now seen corresponding path program 1 times [2020-11-30 00:57:21,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:21,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468706108] [2020-11-30 00:57:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:21,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:57:21,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:21,956 INFO L384 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 [2020-11-30 00:57:21,956 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:21,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:21,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:21,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:57:21,975 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_107|], 1=[|v_#valid_122|]} [2020-11-30 00:57:21,979 INFO L384 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 [2020-11-30 00:57:21,979 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:21,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:21,999 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,000 INFO L384 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 13 treesize of output 17 [2020-11-30 00:57:22,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:57:22,007 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,016 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,016 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:13 [2020-11-30 00:57:22,043 INFO L384 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 [2020-11-30 00:57:22,044 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,059 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,064 INFO L384 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 [2020-11-30 00:57:22,064 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,074 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,075 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,075 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-11-30 00:57:22,169 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,169 INFO L384 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 62 treesize of output 72 [2020-11-30 00:57:22,172 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-11-30 00:57:22,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 00:57:22,173 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:57:22,212 INFO L384 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 29 treesize of output 24 [2020-11-30 00:57:22,212 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,228 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:57:22,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:53 [2020-11-30 00:57:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:57:22,305 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-11-30 00:57:22,307 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,378 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,378 INFO L384 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 40 treesize of output 35 [2020-11-30 00:57:22,379 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:22,399 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:22,399 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:67, output treesize:11 [2020-11-30 00:57:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:22,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:24,674 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (forall ((v_prenex_1 (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd v_prenex_1 (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse1 (bvadd .cse1 (_ bv4 32)))))) is different from false [2020-11-30 00:57:26,702 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_1 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd v_prenex_1 (_ bv4 32)) c_main_~end~0.offset))) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))) is different from false [2020-11-30 00:57:26,751 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:26,979 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-30 00:57:26,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:26,993 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:27,362 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-11-30 00:57:27,363 INFO L625 ElimStorePlain]: treesize reduction 59, result has 54.3 percent of original size [2020-11-30 00:57:27,373 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:27,494 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-30 00:57:27,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:27,495 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:57:27,501 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:57:27,505 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 4 xjuncts. [2020-11-30 00:57:27,505 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:133, output treesize:33 [2020-11-30 00:57:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:27,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468706108] [2020-11-30 00:57:27,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:27,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-30 00:57:27,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775512495] [2020-11-30 00:57:27,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:57:27,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:57:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=151, Unknown=2, NotChecked=50, Total=240 [2020-11-30 00:57:27,677 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 16 states. [2020-11-30 00:57:30,182 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-11-30 00:57:32,451 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-11-30 00:57:35,312 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-11-30 00:57:37,655 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-11-30 00:57:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:39,187 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-11-30 00:57:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 00:57:39,187 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-11-30 00:57:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:39,188 INFO L225 Difference]: With dead ends: 143 [2020-11-30 00:57:39,188 INFO L226 Difference]: Without dead ends: 143 [2020-11-30 00:57:39,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=319, Invalid=743, Unknown=2, NotChecked=126, Total=1190 [2020-11-30 00:57:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-30 00:57:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2020-11-30 00:57:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-30 00:57:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2020-11-30 00:57:39,193 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 18 [2020-11-30 00:57:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:39,193 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2020-11-30 00:57:39,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:57:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2020-11-30 00:57:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:57:39,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:39,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:39,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 00:57:39,407 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash -246059832, now seen corresponding path program 1 times [2020-11-30 00:57:39,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:39,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770083950] [2020-11-30 00:57:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:39,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:57:39,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:57:39,533 INFO L384 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 [2020-11-30 00:57:39,533 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:39,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:39,538 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:39,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-30 00:57:39,560 INFO L384 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 19 treesize of output 7 [2020-11-30 00:57:39,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:57:39,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:57:39,564 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:57:39,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-30 00:57:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:39,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:57:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770083950] [2020-11-30 00:57:39,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:39,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:57:39,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761231057] [2020-11-30 00:57:39,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:57:39,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:57:39,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:57:39,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:57:39,635 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand 8 states. [2020-11-30 00:57:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:40,262 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2020-11-30 00:57:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:57:40,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-30 00:57:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:40,264 INFO L225 Difference]: With dead ends: 170 [2020-11-30 00:57:40,264 INFO L226 Difference]: Without dead ends: 170 [2020-11-30 00:57:40,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:57:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-30 00:57:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 123. [2020-11-30 00:57:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-30 00:57:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2020-11-30 00:57:40,268 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 23 [2020-11-30 00:57:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:40,268 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2020-11-30 00:57:40,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:57:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2020-11-30 00:57:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:57:40,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:40,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:40,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 00:57:40,479 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr53ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 00:57:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:40,480 INFO L82 PathProgramCache]: Analyzing trace with hash 58536378, now seen corresponding path program 1 times [2020-11-30 00:57:40,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:57:40,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697612150] [2020-11-30 00:57:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d3123ea-91d0-4ba7-bf29-fb1396207a69/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-30 00:57:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:40,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:40,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:40,671 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:57:40,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:57:40,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 00:57:40,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:57:40 BoogieIcfgContainer [2020-11-30 00:57:40,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:57:40,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:57:40,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:57:40,903 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:57:40,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:03" (3/4) ... [2020-11-30 00:57:40,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:57:40,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:57:40,909 INFO L168 Benchmark]: Toolchain (without parser) took 38898.48 ms. Allocated memory was 65.0 MB in the beginning and 125.8 MB in the end (delta: 60.8 MB). Free memory was 43.1 MB in the beginning and 56.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 49.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:40,910 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:40,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.32 ms. Allocated memory is still 65.0 MB. Free memory was 42.8 MB in the beginning and 36.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:40,913 INFO L168 Benchmark]: Boogie Preprocessor took 94.41 ms. Allocated memory is still 65.0 MB. Free memory was 36.1 MB in the beginning and 33.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:40,914 INFO L168 Benchmark]: RCFGBuilder took 1247.74 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 32.8 MB in the beginning and 44.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:40,914 INFO L168 Benchmark]: TraceAbstraction took 36931.83 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 43.9 MB in the beginning and 57.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:40,915 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 125.8 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:40,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 609.32 ms. Allocated memory is still 65.0 MB. Free memory was 42.8 MB in the beginning and 36.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.41 ms. Allocated memory is still 65.0 MB. Free memory was 36.1 MB in the beginning and 33.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1247.74 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 32.8 MB in the beginning and 44.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36931.83 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 43.9 MB in the beginning and 57.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 125.8 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1006] list->next = ((void*)0) VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1007] list->prev = ((void*)0) VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1041] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1051] COND TRUE !(end->next) [L1051] CALL reach_error() [L991] COND FALSE !(0) [L991] __assert_fail ("0", "dll-rb-cnstr_1-2.c", 11, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 150 locations, 63 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 908 SDtfs, 1706 SDslu, 1942 SDs, 0 SdLazy, 3004 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 100 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 419 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 298 ConstructedInterpolants, 15 QuantifiedInterpolants, 28614 SizeOfPredicates, 71 NumberOfNonLiveVariables, 1033 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...