./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cf6b9a1a7372eb466349e319faa44cf865bdad ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 01:57:47,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:57:47,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:57:47,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:57:47,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:57:47,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:57:47,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:57:47,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:57:47,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:57:47,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:57:47,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:57:47,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:57:47,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:57:47,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:57:47,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:57:47,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:57:47,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:57:47,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:57:47,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:57:47,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:57:47,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:57:47,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:57:47,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:57:47,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:57:47,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:57:47,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:57:47,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:57:47,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:57:47,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:57:47,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:57:47,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:57:47,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:57:47,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:57:47,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:57:47,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:57:47,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:57:47,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:57:47,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:57:47,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:57:47,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:57:47,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:57:47,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-20 01:57:47,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:57:47,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:57:47,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:57:47,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:57:47,309 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:57:47,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:57:47,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:57:47,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:57:47,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:57:47,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:57:47,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:57:47,311 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 01:57:47,312 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 01:57:47,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:57:47,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:57:47,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:57:47,312 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:57:47,313 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:57:47,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:57:47,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:57:47,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:57:47,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:57:47,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:57:47,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:57:47,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:57:47,315 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:57:47,315 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:57:47,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:57:47,315 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3aefdae6-f00b-4206-8c1e-cf673454f081/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-memcleanup) ) 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 -> d0cf6b9a1a7372eb466349e319faa44cf865bdad [2019-11-20 01:57:47,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:57:47,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:57:47,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:57:47,514 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:57:47,514 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:57:47,515 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-1.i [2019-11-20 01:57:47,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/data/885c9886d/20b7bf8fd8be4eee982d98dc37fc79a7/FLAG9ce9f5e9c [2019-11-20 01:57:48,017 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:57:48,018 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/sv-benchmarks/c/list-properties/simple-1.i [2019-11-20 01:57:48,030 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/data/885c9886d/20b7bf8fd8be4eee982d98dc37fc79a7/FLAG9ce9f5e9c [2019-11-20 01:57:48,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/data/885c9886d/20b7bf8fd8be4eee982d98dc37fc79a7 [2019-11-20 01:57:48,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:57:48,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 01:57:48,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:57:48,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:57:48,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:57:48,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b97693e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48, skipping insertion in model container [2019-11-20 01:57:48,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,074 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:57:48,127 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:57:48,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:57:48,544 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:57:48,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:57:48,642 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:57:48,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48 WrapperNode [2019-11-20 01:57:48,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:57:48,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:57:48,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:57:48,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:57:48,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... [2019-11-20 01:57:48,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:57:48,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:57:48,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:57:48,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:57:48,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/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 [2019-11-20 01:57:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 01:57:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 01:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 01:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 01:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 01:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 01:57:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 01:57:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 01:57:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 01:57:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 01:57:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 01:57:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 01:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 01:57:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 01:57:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 01:57:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 01:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 01:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 01:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 01:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 01:57:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 01:57:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 01:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 01:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 01:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:57:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 01:57:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:57:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:57:49,061 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 01:57:49,308 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:57:49,308 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-20 01:57:49,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:57:49 BoogieIcfgContainer [2019-11-20 01:57:49,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:57:49,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:57:49,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:57:49,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:57:49,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:57:48" (1/3) ... [2019-11-20 01:57:49,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:57:49, skipping insertion in model container [2019-11-20 01:57:49,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:48" (2/3) ... [2019-11-20 01:57:49,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:57:49, skipping insertion in model container [2019-11-20 01:57:49,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:57:49" (3/3) ... [2019-11-20 01:57:49,315 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2019-11-20 01:57:49,322 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:57:49,327 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2019-11-20 01:57:49,336 INFO L249 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2019-11-20 01:57:49,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:57:49,352 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 01:57:49,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:57:49,352 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:57:49,352 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:57:49,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:57:49,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:57:49,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:57:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-11-20 01:57:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 01:57:49,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:49,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:49,375 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1150264944, now seen corresponding path program 1 times [2019-11-20 01:57:49,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:49,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [276601629] [2019-11-20 01:57:49,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:49,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 01:57:49,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:49,674 INFO L377 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 [2019-11-20 01:57:49,674 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:49,681 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:49,682 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:49,682 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:57:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:49,692 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:49,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [276601629] [2019-11-20 01:57:49,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:49,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 01:57:49,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439226204] [2019-11-20 01:57:49,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 01:57:49,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:49,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:57:49,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:57:49,728 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2019-11-20 01:57:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:49,882 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-11-20 01:57:49,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:57:49,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 01:57:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:49,891 INFO L225 Difference]: With dead ends: 50 [2019-11-20 01:57:49,891 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 01:57:49,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:57:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 01:57:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-20 01:57:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 01:57:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-11-20 01:57:49,927 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 9 [2019-11-20 01:57:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:49,927 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-11-20 01:57:49,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 01:57:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-11-20 01:57:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 01:57:49,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:49,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:50,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:50,129 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:50,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:50,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1150264945, now seen corresponding path program 1 times [2019-11-20 01:57:50,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:50,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1665307608] [2019-11-20 01:57:50,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:50,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:57:50,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:50,305 INFO L377 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 [2019-11-20 01:57:50,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:50,316 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:50,316 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:50,316 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:57:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:50,332 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:50,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1665307608] [2019-11-20 01:57:50,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:50,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 01:57:50,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633904194] [2019-11-20 01:57:50,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:57:50,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:50,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:57:50,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:57:50,388 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2019-11-20 01:57:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:50,522 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2019-11-20 01:57:50,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:57:50,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 01:57:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:50,524 INFO L225 Difference]: With dead ends: 41 [2019-11-20 01:57:50,524 INFO L226 Difference]: Without dead ends: 41 [2019-11-20 01:57:50,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:57:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-20 01:57:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-20 01:57:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-20 01:57:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-11-20 01:57:50,534 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 9 [2019-11-20 01:57:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:50,534 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-11-20 01:57:50,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:57:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-11-20 01:57:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 01:57:50,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:50,535 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:50,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:50,738 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:50,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1598016209, now seen corresponding path program 1 times [2019-11-20 01:57:50,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:50,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1330935948] [2019-11-20 01:57:50,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:50,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:57:50,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:50,939 INFO L377 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 [2019-11-20 01:57:50,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:50,942 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:50,942 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:50,942 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:57:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:50,966 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:50,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1330935948] [2019-11-20 01:57:50,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:50,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-11-20 01:57:50,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178324460] [2019-11-20 01:57:50,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:57:50,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:50,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:57:50,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:57:50,996 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2019-11-20 01:57:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:51,306 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-20 01:57:51,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:57:51,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 01:57:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:51,308 INFO L225 Difference]: With dead ends: 62 [2019-11-20 01:57:51,308 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 01:57:51,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:57:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 01:57:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-11-20 01:57:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 01:57:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-11-20 01:57:51,320 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2019-11-20 01:57:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:51,320 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-11-20 01:57:51,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:57:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-11-20 01:57:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 01:57:51,321 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:51,321 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:51,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:51,522 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:51,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1598016210, now seen corresponding path program 1 times [2019-11-20 01:57:51,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:51,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [944253067] [2019-11-20 01:57:51,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:51,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:57:51,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:51,714 INFO L377 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 [2019-11-20 01:57:51,714 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:51,721 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:51,721 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:51,721 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:57:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:51,752 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:51,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944253067] [2019-11-20 01:57:51,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:51,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 01:57:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858954155] [2019-11-20 01:57:51,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:57:51,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:51,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:57:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:57:51,872 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2019-11-20 01:57:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:52,236 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2019-11-20 01:57:52,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:57:52,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 01:57:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:52,239 INFO L225 Difference]: With dead ends: 55 [2019-11-20 01:57:52,239 INFO L226 Difference]: Without dead ends: 55 [2019-11-20 01:57:52,239 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 01:57:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-20 01:57:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2019-11-20 01:57:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-20 01:57:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2019-11-20 01:57:52,245 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2019-11-20 01:57:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:52,245 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2019-11-20 01:57:52,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:57:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2019-11-20 01:57:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 01:57:52,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:52,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:52,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:52,450 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:52,450 INFO L82 PathProgramCache]: Analyzing trace with hash 592829948, now seen corresponding path program 1 times [2019-11-20 01:57:52,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:52,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2078855120] [2019-11-20 01:57:52,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:52,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:57:52,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:52,607 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:52,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2078855120] [2019-11-20 01:57:52,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:52,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 01:57:52,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577151311] [2019-11-20 01:57:52,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:57:52,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:57:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:57:52,616 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 4 states. [2019-11-20 01:57:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:52,770 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2019-11-20 01:57:52,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:57:52,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-20 01:57:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:52,771 INFO L225 Difference]: With dead ends: 52 [2019-11-20 01:57:52,772 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 01:57:52,772 INFO L630 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 [2019-11-20 01:57:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 01:57:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-11-20 01:57:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-20 01:57:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2019-11-20 01:57:52,778 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 16 [2019-11-20 01:57:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:52,779 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2019-11-20 01:57:52,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:57:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2019-11-20 01:57:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 01:57:52,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:52,780 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:52,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:52,980 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash -780855972, now seen corresponding path program 1 times [2019-11-20 01:57:52,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:52,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [315902797] [2019-11-20 01:57:52,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:53,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:57:53,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:53,200 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:53,201 INFO L377 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 [2019-11-20 01:57:53,201 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:53,217 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 01:57:53,218 INFO L496 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. [2019-11-20 01:57:53,218 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 01:57:53,236 INFO L377 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 [2019-11-20 01:57:53,236 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:53,245 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:53,245 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:53,246 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:11 [2019-11-20 01:57:53,268 INFO L377 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 21 treesize of output 9 [2019-11-20 01:57:53,269 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:53,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:53,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:53,275 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2019-11-20 01:57:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:53,315 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:53,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [315902797] [2019-11-20 01:57:53,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:53,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-20 01:57:53,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799245941] [2019-11-20 01:57:53,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:57:53,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:57:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:57:53,342 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 7 states. [2019-11-20 01:57:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:53,759 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2019-11-20 01:57:53,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 01:57:53,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-20 01:57:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:53,760 INFO L225 Difference]: With dead ends: 63 [2019-11-20 01:57:53,760 INFO L226 Difference]: Without dead ends: 63 [2019-11-20 01:57:53,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:57:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-20 01:57:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2019-11-20 01:57:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 01:57:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-11-20 01:57:53,765 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 18 [2019-11-20 01:57:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:53,765 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2019-11-20 01:57:53,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:57:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2019-11-20 01:57:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 01:57:53,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:53,767 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:53,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:53,969 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash -780855971, now seen corresponding path program 1 times [2019-11-20 01:57:53,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:53,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1457299915] [2019-11-20 01:57:53,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:54,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 01:57:54,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:54,137 INFO L377 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 [2019-11-20 01:57:54,138 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:54,144 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,144 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:57:54,163 INFO L377 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 [2019-11-20 01:57:54,163 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,177 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:54,183 INFO L377 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 [2019-11-20 01:57:54,183 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,195 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:54,196 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,196 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-11-20 01:57:54,233 INFO L377 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 23 treesize of output 11 [2019-11-20 01:57:54,234 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,242 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:54,245 INFO L377 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 [2019-11-20 01:57:54,245 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,250 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:54,250 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:54,250 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-11-20 01:57:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:54,273 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:54,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1457299915] [2019-11-20 01:57:54,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:57:54,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 01:57:54,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424314206] [2019-11-20 01:57:54,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 01:57:54,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:54,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 01:57:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:57:54,486 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 10 states. [2019-11-20 01:57:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:55,202 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-11-20 01:57:55,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:57:55,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-20 01:57:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:55,204 INFO L225 Difference]: With dead ends: 59 [2019-11-20 01:57:55,204 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 01:57:55,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-11-20 01:57:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 01:57:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-11-20 01:57:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-20 01:57:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-11-20 01:57:55,209 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 18 [2019-11-20 01:57:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:55,209 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-11-20 01:57:55,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 01:57:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-11-20 01:57:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:57:55,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:55,210 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:55,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:55,411 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:55,411 INFO L82 PathProgramCache]: Analyzing trace with hash -207665398, now seen corresponding path program 1 times [2019-11-20 01:57:55,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:55,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2015692071] [2019-11-20 01:57:55,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:57:55,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 01:57:55,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:57:55,611 INFO L377 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 [2019-11-20 01:57:55,612 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,624 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:55,628 INFO L377 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 [2019-11-20 01:57:55,628 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,638 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:55,638 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,638 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 01:57:55,695 INFO L377 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 [2019-11-20 01:57:55,696 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,707 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:55,712 INFO L377 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 [2019-11-20 01:57:55,712 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,719 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:57:55,719 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:57:55,719 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 01:57:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:55,741 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:57:55,803 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2019-11-20 01:57:55,805 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-20 01:57:55,821 INFO L567 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-11-20 01:57:55,822 INFO L464 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2019-11-20 01:57:55,822 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-20 01:57:55,822 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-11-20 01:57:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:57:55,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2015692071] [2019-11-20 01:57:55,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:57:55,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2019-11-20 01:57:55,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937793962] [2019-11-20 01:57:55,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 01:57:55,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:57:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:57:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:57:55,846 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2019-11-20 01:57:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:57:56,280 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2019-11-20 01:57:56,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 01:57:56,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-11-20 01:57:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:57:56,282 INFO L225 Difference]: With dead ends: 54 [2019-11-20 01:57:56,282 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 01:57:56,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-11-20 01:57:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 01:57:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2019-11-20 01:57:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-20 01:57:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-11-20 01:57:56,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 20 [2019-11-20 01:57:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:57:56,288 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2019-11-20 01:57:56,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 01:57:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2019-11-20 01:57:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 01:57:56,289 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:57:56,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:57:56,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:56,492 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:57:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:57:56,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2142661346, now seen corresponding path program 1 times [2019-11-20 01:57:56,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:57:56,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1909966915] [2019-11-20 01:57:56,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:57:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:57:56,726 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 01:57:56,726 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 01:57:56,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:57:56,947 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-20 01:57:56,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:57:56 BoogieIcfgContainer [2019-11-20 01:57:56,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:57:56,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:57:56,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:57:56,960 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:57:56,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:57:49" (3/4) ... [2019-11-20 01:57:56,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 01:57:56,979 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-20 01:57:57,018 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3aefdae6-f00b-4206-8c1e-cf673454f081/bin/uautomizer/witness.graphml [2019-11-20 01:57:57,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:57:57,020 INFO L168 Benchmark]: Toolchain (without parser) took 8969.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-11-20 01:57:57,020 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:57:57,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:57:57,021 INFO L168 Benchmark]: Boogie Preprocessor took 61.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:57:57,022 INFO L168 Benchmark]: RCFGBuilder took 601.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-11-20 01:57:57,022 INFO L168 Benchmark]: TraceAbstraction took 7649.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:57:57,022 INFO L168 Benchmark]: Witness Printer took 58.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:57:57,025 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 591.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 601.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7649.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 58.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 520]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L522] COND FALSE !(a == 0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L523] List t; [L524] List p = a; VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L525] a->h = 2 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L534] p->n = 0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L535] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L536] COND TRUE p!=0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L537] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=2] [L537] COND FALSE !(p->h != 2) [L540] EXPR p->n VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}] [L540] p = p->n [L536] COND FALSE !(p!=0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] [L542] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 67 locations, 17 error locations. Result: UNSAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 486 SDslu, 343 SDs, 0 SdLazy, 596 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 80 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 208 ConstructedInterpolants, 3 QuantifiedInterpolants, 16100 SizeOfPredicates, 47 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...