./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:20:29,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:20:29,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:20:29,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:20:29,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:20:29,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:20:29,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:20:29,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:20:29,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:20:29,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:20:29,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:20:29,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:20:29,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:20:29,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:20:29,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:20:29,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:20:29,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:20:29,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:20:29,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:20:29,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:20:29,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:20:29,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:20:29,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:20:29,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:20:29,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:20:29,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:20:29,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:20:29,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:20:29,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:20:29,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:20:29,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:20:29,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:20:29,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:20:29,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:20:29,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:20:29,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:20:29,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:20:29,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:20:29,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:20:29,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:20:29,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:20:29,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:20:29,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:20:29,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:20:29,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:20:29,111 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:20:29,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:20:29,111 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:20:29,111 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:20:29,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:20:29,112 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:20:29,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:20:29,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:20:29,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:20:29,113 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:20:29,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:20:29,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:20:29,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:20:29,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:20:29,114 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:20:29,114 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:20:29,115 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:20:29,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:20:29,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:20:29,115 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:20:29,116 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:29,116 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:20:29,116 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:20:29,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:20:29,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:20:29,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:20:29,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:20:29,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:20:29,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:20:29,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:20:29,118 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:20:29,118 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:20:29,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:20:29,118 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_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 134c0db99ce5251339642354d8ec6411765b7878 [2019-11-26 02:20:29,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:20:29,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:20:29,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:20:29,264 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:20:29,265 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:20:29,265 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-26 02:20:29,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/data/6a231e52d/8a30a33ab9dc414498ffd9db07a75034/FLAG52abda5b9 [2019-11-26 02:20:29,783 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:20:29,783 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-26 02:20:29,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/data/6a231e52d/8a30a33ab9dc414498ffd9db07a75034/FLAG52abda5b9 [2019-11-26 02:20:29,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/data/6a231e52d/8a30a33ab9dc414498ffd9db07a75034 [2019-11-26 02:20:29,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:20:29,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:20:29,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:29,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:20:29,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:20:29,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:29" (1/1) ... [2019-11-26 02:20:29,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626d3804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:29, skipping insertion in model container [2019-11-26 02:20:29,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:29" (1/1) ... [2019-11-26 02:20:29,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:20:29,885 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:20:30,304 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:20:30,304 INFO L968 CHandler]: at location: C: (int*) __builtin_alloca (N * sizeof(int)) [535] [2019-11-26 02:20:30,305 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:30,306 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:20:30,306 INFO L968 CHandler]: at location: C: (int*) __builtin_alloca (N * sizeof(int)) [536] [2019-11-26 02:20:30,306 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:30,307 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:20:30,307 INFO L968 CHandler]: at location: C: (int*) __builtin_alloca (M * sizeof(int)) [537] [2019-11-26 02:20:30,308 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:30,309 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:20:30,309 INFO L968 CHandler]: at location: C: (int*) __builtin_alloca (M * sizeof(int)) [538] [2019-11-26 02:20:30,309 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:30,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:30,336 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 02:20:30,349 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:20:30,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:30,383 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:20:30,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:30,477 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:20:30,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30 WrapperNode [2019-11-26 02:20:30,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:30,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:30,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:20:30,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:20:30,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:30,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:20:30,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:20:30,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:20:30,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... [2019-11-26 02:20:30,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:20:30,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:20:30,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:20:30,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:20:30,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/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 [2019-11-26 02:20:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:20:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:20:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:20:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:20:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:20:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:20:31,389 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:20:31,389 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:20:31,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:31 BoogieIcfgContainer [2019-11-26 02:20:31,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:20:31,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:20:31,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:20:31,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:20:31,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:20:29" (1/3) ... [2019-11-26 02:20:31,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2f917a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:31, skipping insertion in model container [2019-11-26 02:20:31,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:30" (2/3) ... [2019-11-26 02:20:31,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2f917a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:31, skipping insertion in model container [2019-11-26 02:20:31,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:31" (3/3) ... [2019-11-26 02:20:31,397 INFO L109 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2019-11-26 02:20:31,405 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:20:31,410 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2019-11-26 02:20:31,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2019-11-26 02:20:31,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:20:31,435 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:20:31,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:20:31,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:20:31,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:20:31,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:20:31,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:20:31,436 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:20:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-26 02:20:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:20:31,453 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:31,453 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:31,454 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:20:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2019-11-26 02:20:31,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:31,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1239226088] [2019-11-26 02:20:31,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/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 [2019-11-26 02:20:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:31,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:20:31,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:31,775 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2019-11-26 02:20:31,776 INFO L343 Elim1Store]: treesize reduction 93, result has 20.5 percent of original size [2019-11-26 02:20:31,777 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 51 [2019-11-26 02:20:31,778 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:31,814 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:31,815 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-26 02:20:31,816 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:37 [2019-11-26 02:20:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:31,849 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:31,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1239226088] [2019-11-26 02:20:31,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:31,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:20:31,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021824421] [2019-11-26 02:20:31,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:20:31,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:20:31,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:20:31,891 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2019-11-26 02:20:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:32,204 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-11-26 02:20:32,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:20:32,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:20:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:32,215 INFO L225 Difference]: With dead ends: 64 [2019-11-26 02:20:32,215 INFO L226 Difference]: Without dead ends: 62 [2019-11-26 02:20:32,217 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:20:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-26 02:20:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2019-11-26 02:20:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-26 02:20:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2019-11-26 02:20:32,248 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 7 [2019-11-26 02:20:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:32,248 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2019-11-26 02:20:32,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:20:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2019-11-26 02:20:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:20:32,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:32,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:32,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:20:32,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:20:32,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2019-11-26 02:20:32,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:32,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1102739034] [2019-11-26 02:20:32,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/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 [2019-11-26 02:20:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:32,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:20:32,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:32,619 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_33|], 4=[|v_#valid_44|]} [2019-11-26 02:20:32,630 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:20:32,632 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:20:32,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:20:32,693 INFO L343 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2019-11-26 02:20:32,694 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2019-11-26 02:20:32,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:32,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:32,758 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:32,759 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2019-11-26 02:20:32,759 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:32,792 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:32,794 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-26 02:20:32,794 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:41, output treesize:39 [2019-11-26 02:20:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:32,846 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:32,971 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:32,972 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2019-11-26 02:20:32,973 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:32,995 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:32,999 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:20:32,999 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:20:33,000 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:33,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:33,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:20:33,043 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-11-26 02:20:33,044 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:47, output treesize:11 [2019-11-26 02:20:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:33,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1102739034] [2019-11-26 02:20:33,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:33,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-26 02:20:33,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947413825] [2019-11-26 02:20:33,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:20:33,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:33,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:20:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:33,110 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 8 states. [2019-11-26 02:20:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:34,964 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2019-11-26 02:20:34,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:20:34,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-26 02:20:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:34,968 INFO L225 Difference]: With dead ends: 237 [2019-11-26 02:20:34,968 INFO L226 Difference]: Without dead ends: 237 [2019-11-26 02:20:34,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:20:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-11-26 02:20:34,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 68. [2019-11-26 02:20:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-26 02:20:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2019-11-26 02:20:34,980 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2019-11-26 02:20:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:34,981 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2019-11-26 02:20:34,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:20:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2019-11-26 02:20:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:20:34,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:34,981 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:35,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:20:35,182 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:20:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:35,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2019-11-26 02:20:35,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:35,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [767920521] [2019-11-26 02:20:35,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/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 [2019-11-26 02:20:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:20:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:20:35,372 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:20:35,372 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:20:35,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:20:35,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:20:35 BoogieIcfgContainer [2019-11-26 02:20:35,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:20:35,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:20:35,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:20:35,589 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:20:35,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:31" (3/4) ... [2019-11-26 02:20:35,591 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:20:35,627 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f4d1774-593d-43b3-a004-507450f81f59/bin/utaipan/witness.graphml [2019-11-26 02:20:35,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:20:35,629 INFO L168 Benchmark]: Toolchain (without parser) took 5813.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.0 MB in the beginning and 888.6 MB in the end (delta: 53.4 MB). Peak memory consumption was 177.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:35,629 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:35,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:35,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.66 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:35,631 INFO L168 Benchmark]: Boogie Preprocessor took 35.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:35,631 INFO L168 Benchmark]: RCFGBuilder took 827.47 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:35,632 INFO L168 Benchmark]: TraceAbstraction took 4196.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 888.6 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:35,632 INFO L168 Benchmark]: Witness Printer took 38.58 ms. Allocated memory is still 1.2 GB. Free memory is still 888.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:35,635 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 661.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.66 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 827.47 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4196.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 888.6 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.58 ms. Allocated memory is still 1.2 GB. Free memory is still 888.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) [L532] COND TRUE M < 1 [L533] M = 1 [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; [L540] COND TRUE i < N [L542] size[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 27 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 387 SDslu, 288 SDs, 0 SdLazy, 250 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, 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, 2 MinimizatonAttempts, 169 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 1716 SizeOfPredicates, 14 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...