./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 6b5699aa 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_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 0.1.24-6b5699a [2019-11-25 08:49:37,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:37,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:37,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:37,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:37,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:37,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:37,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:37,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:37,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:37,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:37,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:37,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:37,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:37,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:37,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:37,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:37,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:37,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:37,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:37,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:37,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:37,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:37,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:37,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:37,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:37,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:37,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:37,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:37,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:37,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:37,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:37,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:37,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:37,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:37,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:37,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:37,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:37,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:37,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:37,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:37,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-25 08:49:37,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:37,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:37,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:37,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:37,920 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:37,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:37,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:37,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:49:37,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:37,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:37,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:37,921 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:49:37,921 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:49:37,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:37,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:49:37,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:49:37,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:49:37,922 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:37,923 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:37,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:37,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:37,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:37,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:37,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:37,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:37,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:37,924 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:49:37,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:49:37,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:49:37,925 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_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:38,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:38,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:38,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:38,103 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:38,104 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:38,104 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-1.i [2019-11-25 08:49:38,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/data/177c6894c/52380070c57e430085e72319d1fb192b/FLAG373553e2c [2019-11-25 08:49:38,656 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:38,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/sv-benchmarks/c/list-properties/simple-1.i [2019-11-25 08:49:38,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/data/177c6894c/52380070c57e430085e72319d1fb192b/FLAG373553e2c [2019-11-25 08:49:38,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/data/177c6894c/52380070c57e430085e72319d1fb192b [2019-11-25 08:49:38,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:38,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:49:38,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:38,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:38,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:38,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:38" (1/1) ... [2019-11-25 08:49:38,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73104c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:38, skipping insertion in model container [2019-11-25 08:49:38,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:38" (1/1) ... [2019-11-25 08:49:38,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:39,002 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:39,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:39,433 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:39,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:39,560 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:39,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39 WrapperNode [2019-11-25 08:49:39,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:39,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:39,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:39,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:39,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:39,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:39,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:39,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:39,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:49:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:39,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:49:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:49:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:49:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:49:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:49:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:49:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-25 08:49:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:49:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:49:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:49:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:49:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:49:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:49:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:49:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:49:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:49:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:49:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:49:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:49:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:49:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:49:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:49:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:49:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:49:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:49:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:49:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:49:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:49:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:49:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:49:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:49:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:49:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:49:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:49:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:49:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:49:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:49:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:49:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:49:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:49:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:49:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:49:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:49:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:49:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:49:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:49:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:49:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:49:39,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:49:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:49:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:49:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:49:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:49:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:49:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:49:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:49:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:49:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:49:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:49:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:49:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:49:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:49:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:49:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:49:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:49:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:49:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:49:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:49:39,781 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:49:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:49:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:49:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:49:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:49:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:49:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:49:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:49:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-25 08:49:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:49:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:49:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:49:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:40,167 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-25 08:49:40,401 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:40,402 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-25 08:49:40,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40 BoogieIcfgContainer [2019-11-25 08:49:40,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:40,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:40,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:40,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:40,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:38" (1/3) ... [2019-11-25 08:49:40,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fb5d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:40, skipping insertion in model container [2019-11-25 08:49:40,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (2/3) ... [2019-11-25 08:49:40,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fb5d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:40, skipping insertion in model container [2019-11-25 08:49:40,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40" (3/3) ... [2019-11-25 08:49:40,410 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2019-11-25 08:49:40,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:40,430 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2019-11-25 08:49:40,441 INFO L249 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2019-11-25 08:49:40,458 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:40,458 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:49:40,459 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:40,459 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:40,459 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:40,459 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:40,459 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:40,459 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-11-25 08:49:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:49:40,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:40,487 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:40,487 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]=== [2019-11-25 08:49:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:40,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1570825338, now seen corresponding path program 1 times [2019-11-25 08:49:40,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:40,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1121994826] [2019-11-25 08:49:40,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:40,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:49:40,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:40,765 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 [2019-11-25 08:49:40,765 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:40,772 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:40,773 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:40,773 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:49:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:40,783 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:40,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1121994826] [2019-11-25 08:49:40,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:40,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:49:40,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416449549] [2019-11-25 08:49:40,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:49:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:40,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:49:40,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:40,820 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2019-11-25 08:49:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:40,960 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-11-25 08:49:40,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:40,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-25 08:49:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:40,972 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:49:40,972 INFO L226 Difference]: Without dead ends: 42 [2019-11-25 08:49:40,974 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 [2019-11-25 08:49:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-25 08:49:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-25 08:49:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-25 08:49:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-11-25 08:49:41,015 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 9 [2019-11-25 08:49:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:41,015 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-11-25 08:49:41,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:49:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-11-25 08:49:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:49:41,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:41,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:41,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:41,217 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]=== [2019-11-25 08:49:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1570825337, now seen corresponding path program 1 times [2019-11-25 08:49:41,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:41,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2028336820] [2019-11-25 08:49:41,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:41,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:49:41,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:41,397 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 [2019-11-25 08:49:41,398 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:41,405 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:41,406 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:41,406 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:49:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:41,418 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:41,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2028336820] [2019-11-25 08:49:41,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:41,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:49:41,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625153463] [2019-11-25 08:49:41,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:41,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:41,469 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2019-11-25 08:49:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:41,600 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2019-11-25 08:49:41,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:41,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-25 08:49:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:41,602 INFO L225 Difference]: With dead ends: 41 [2019-11-25 08:49:41,602 INFO L226 Difference]: Without dead ends: 41 [2019-11-25 08:49:41,603 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 [2019-11-25 08:49:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-25 08:49:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-25 08:49:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-25 08:49:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-11-25 08:49:41,609 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 9 [2019-11-25 08:49:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:41,609 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-11-25 08:49:41,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-11-25 08:49:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:49:41,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:41,610 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:41,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:41,811 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]=== [2019-11-25 08:49:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2029628162, now seen corresponding path program 1 times [2019-11-25 08:49:41,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:41,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [603229355] [2019-11-25 08:49:41,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:42,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:49:42,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:42,017 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 [2019-11-25 08:49:42,018 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:42,021 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:42,021 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:42,022 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:49:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:42,050 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:42,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [603229355] [2019-11-25 08:49:42,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:42,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-11-25 08:49:42,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717554899] [2019-11-25 08:49:42,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:42,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:42,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:42,075 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2019-11-25 08:49:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:42,391 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-25 08:49:42,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:49:42,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:49:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:42,393 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:49:42,394 INFO L226 Difference]: Without dead ends: 62 [2019-11-25 08:49:42,394 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 [2019-11-25 08:49:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-25 08:49:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-11-25 08:49:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-25 08:49:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-11-25 08:49:42,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2019-11-25 08:49:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:42,400 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-11-25 08:49:42,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-11-25 08:49:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:49:42,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:42,401 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:42,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:42,606 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]=== [2019-11-25 08:49:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:42,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2029628161, now seen corresponding path program 1 times [2019-11-25 08:49:42,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:42,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [450757054] [2019-11-25 08:49:42,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:42,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:49:42,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:42,815 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 [2019-11-25 08:49:42,816 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:42,823 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:42,823 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:42,823 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:49:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:42,847 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:42,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450757054] [2019-11-25 08:49:42,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:42,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:49:42,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396955692] [2019-11-25 08:49:42,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:42,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:42,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:42,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:42,944 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2019-11-25 08:49:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:43,268 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2019-11-25 08:49:43,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:49:43,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:49:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:43,270 INFO L225 Difference]: With dead ends: 55 [2019-11-25 08:49:43,270 INFO L226 Difference]: Without dead ends: 55 [2019-11-25 08:49:43,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-25 08:49:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2019-11-25 08:49:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-25 08:49:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2019-11-25 08:49:43,280 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2019-11-25 08:49:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:43,281 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2019-11-25 08:49:43,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2019-11-25 08:49:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:49:43,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:43,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:43,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:43,484 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]=== [2019-11-25 08:49:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash -132729860, now seen corresponding path program 1 times [2019-11-25 08:49:43,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:43,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1505733371] [2019-11-25 08:49:43,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:43,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:43,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:43,658 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:43,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1505733371] [2019-11-25 08:49:43,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:43,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:49:43,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663060851] [2019-11-25 08:49:43,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:43,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:43,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:43,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:43,665 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 4 states. [2019-11-25 08:49:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:43,818 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2019-11-25 08:49:43,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:43,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-25 08:49:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:43,820 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:49:43,820 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:49:43,820 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 [2019-11-25 08:49:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:49:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-11-25 08:49:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-25 08:49:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2019-11-25 08:49:43,826 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 16 [2019-11-25 08:49:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:43,826 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2019-11-25 08:49:43,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2019-11-25 08:49:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:49:43,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:43,828 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:44,030 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:44,030 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]=== [2019-11-25 08:49:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:44,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2035838451, now seen corresponding path program 1 times [2019-11-25 08:49:44,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:44,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1623877043] [2019-11-25 08:49:44,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:44,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:49:44,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:44,273 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:44,273 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 [2019-11-25 08:49:44,274 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:44,295 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-25 08:49:44,296 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. [2019-11-25 08:49:44,296 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-25 08:49:44,319 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 [2019-11-25 08:49:44,319 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:44,329 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:44,329 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:44,329 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2019-11-25 08:49:44,348 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 [2019-11-25 08:49:44,349 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:44,354 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:44,354 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:44,355 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:5 [2019-11-25 08:49:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:44,374 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:44,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1623877043] [2019-11-25 08:49:44,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:44,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-25 08:49:44,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840974080] [2019-11-25 08:49:44,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:49:44,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:44,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:49:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:49:44,390 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 7 states. [2019-11-25 08:49:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:44,772 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2019-11-25 08:49:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:49:44,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-25 08:49:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:44,774 INFO L225 Difference]: With dead ends: 63 [2019-11-25 08:49:44,774 INFO L226 Difference]: Without dead ends: 63 [2019-11-25 08:49:44,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:49:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-25 08:49:44,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2019-11-25 08:49:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:49:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-11-25 08:49:44,779 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 18 [2019-11-25 08:49:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:44,779 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2019-11-25 08:49:44,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:49:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2019-11-25 08:49:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:49:44,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:44,780 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:44,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:44,985 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]=== [2019-11-25 08:49:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2035838452, now seen corresponding path program 1 times [2019-11-25 08:49:44,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:44,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [234830078] [2019-11-25 08:49:44,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:45,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:49:45,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:45,192 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 [2019-11-25 08:49:45,192 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,203 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:45,203 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,204 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:49:45,229 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 [2019-11-25 08:49:45,229 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,240 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:45,245 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 [2019-11-25 08:49:45,246 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,255 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:45,256 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,257 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-11-25 08:49:45,286 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 [2019-11-25 08:49:45,287 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,298 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:45,301 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 [2019-11-25 08:49:45,301 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,306 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:45,306 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:45,306 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-11-25 08:49:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,332 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [234830078] [2019-11-25 08:49:45,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:45,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:49:45,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447534573] [2019-11-25 08:49:45,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:49:45,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:49:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:49:45,536 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 10 states. [2019-11-25 08:49:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:46,258 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-11-25 08:49:46,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:49:46,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-25 08:49:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:46,260 INFO L225 Difference]: With dead ends: 59 [2019-11-25 08:49:46,260 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:49:46,261 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:49:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:49:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-11-25 08:49:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-25 08:49:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-11-25 08:49:46,264 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 18 [2019-11-25 08:49:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:46,265 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-11-25 08:49:46,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:49:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-11-25 08:49:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:49:46,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:46,265 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:46,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:46,466 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]=== [2019-11-25 08:49:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash 806318730, now seen corresponding path program 1 times [2019-11-25 08:49:46,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:46,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [741753832] [2019-11-25 08:49:46,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:46,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:49:46,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:46,678 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 [2019-11-25 08:49:46,678 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,691 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:46,698 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 [2019-11-25 08:49:46,698 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,708 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:46,708 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,709 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-25 08:49:46,770 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 [2019-11-25 08:49:46,770 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,779 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:46,782 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 [2019-11-25 08:49:46,782 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,787 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:49:46,788 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:49:46,788 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-25 08:49:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,817 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:46,881 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 [2019-11-25 08:49:46,883 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-25 08:49:46,910 INFO L567 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-11-25 08:49:46,910 INFO L464 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2019-11-25 08:49:46,910 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:49:46,911 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-11-25 08:49:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [741753832] [2019-11-25 08:49:46,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:46,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2019-11-25 08:49:46,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218398209] [2019-11-25 08:49:46,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:49:46,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:46,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:49:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:49:46,934 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2019-11-25 08:49:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:47,375 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2019-11-25 08:49:47,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:49:47,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-11-25 08:49:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:47,377 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:49:47,377 INFO L226 Difference]: Without dead ends: 54 [2019-11-25 08:49:47,378 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 [2019-11-25 08:49:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-25 08:49:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2019-11-25 08:49:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-25 08:49:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-11-25 08:49:47,382 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 20 [2019-11-25 08:49:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:47,383 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2019-11-25 08:49:47,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:49:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2019-11-25 08:49:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-25 08:49:47,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:47,384 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] [2019-11-25 08:49:47,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:47,586 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]=== [2019-11-25 08:49:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:47,586 INFO L82 PathProgramCache]: Analyzing trace with hash -773924428, now seen corresponding path program 1 times [2019-11-25 08:49:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:47,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1902638387] [2019-11-25 08:49:47,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/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 [2019-11-25 08:49:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:47,841 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:49:47,842 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:48,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:48,064 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-25 08:49:48,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:48 BoogieIcfgContainer [2019-11-25 08:49:48,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:48,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:48,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:48,077 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:48,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40" (3/4) ... [2019-11-25 08:49:48,079 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:48,083 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-25 08:49:48,121 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_01150348-c276-4004-9ebd-6e9bc70c2272/bin/uautomizer/witness.graphml [2019-11-25 08:49:48,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:48,123 INFO L168 Benchmark]: Toolchain (without parser) took 9187.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,124 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:48,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,124 INFO L168 Benchmark]: Boogie Preprocessor took 116.79 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,125 INFO L168 Benchmark]: RCFGBuilder took 725.00 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,125 INFO L168 Benchmark]: TraceAbstraction took 7672.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:48,126 INFO L168 Benchmark]: Witness Printer took 44.86 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. [2019-11-25 08:49:48,128 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 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 623.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 116.79 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 725.00 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7672.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 44.86 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 10 procedures, 73 locations, 17 error locations. Result: UNSAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 486 SDslu, 343 SDs, 0 SdLazy, 596 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 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, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 208 ConstructedInterpolants, 3 QuantifiedInterpolants, 16032 SizeOfPredicates, 47 NumberOfNonLiveVariables, 491 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 6/8 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...