./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 35253b1ee79afb5a09e900c41643645460fcad79c099789a427316eeaf2bcdbb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 19:46:48,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:46:48,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:46:48,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:46:48,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:46:48,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:46:48,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:46:48,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:46:48,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:46:48,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:46:48,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:46:48,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:46:48,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:46:48,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:46:48,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:46:48,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:46:48,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:46:48,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:46:48,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:46:48,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:46:48,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:46:48,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:46:48,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:46:48,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:46:48,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:46:48,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:46:48,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:46:48,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:46:48,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:46:48,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:46:48,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:46:48,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:46:48,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:46:48,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:46:48,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:46:48,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:46:48,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:46:48,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:46:48,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:46:48,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:46:48,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:46:48,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-20 19:46:48,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:46:48,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:46:48,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:46:48,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:46:48,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:46:48,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:46:48,838 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:46:48,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:46:48,838 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:46:48,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:46:48,840 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:46:48,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:46:48,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:46:48,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:46:48,840 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:46:48,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:46:48,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:46:48,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:46:48,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:46:48,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 19:46:48,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:46:48,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:46:48,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:46:48,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:46:48,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:46:48,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:46:48,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:48,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:46:48,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:46:48,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:46:48,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:46:48,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:46:48,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:46:48,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:46:48,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:46:48,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35253b1ee79afb5a09e900c41643645460fcad79c099789a427316eeaf2bcdbb [2022-11-20 19:46:49,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:46:49,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:46:49,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:46:49,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:46:49,241 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:46:49,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i [2022-11-20 19:46:52,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:46:52,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:46:52,807 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i [2022-11-20 19:46:52,831 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/data/ea937e790/51bb3e5b98c745eb92bdad58fe19acc4/FLAG8393816f5 [2022-11-20 19:46:52,846 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/data/ea937e790/51bb3e5b98c745eb92bdad58fe19acc4 [2022-11-20 19:46:52,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:46:52,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:46:52,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:52,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:46:52,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:46:52,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:52" (1/1) ... [2022-11-20 19:46:52,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c39a1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:52, skipping insertion in model container [2022-11-20 19:46:52,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:52" (1/1) ... [2022-11-20 19:46:52,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:46:52,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:46:53,293 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 19:46:53,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:53,782 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:46:53,801 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 19:46:53,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:53,968 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:46:53,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53 WrapperNode [2022-11-20 19:46:53,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:53,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:53,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:46:53,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:46:53,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,048 INFO L138 Inliner]: procedures = 502, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2022-11-20 19:46:54,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:54,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:46:54,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:46:54,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:46:54,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:46:54,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:46:54,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:46:54,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:46:54,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (1/1) ... [2022-11-20 19:46:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:54,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:54,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:46:54,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:46:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-20 19:46:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-20 19:46:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 19:46:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 19:46:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 19:46:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:46:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 19:46:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:46:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:46:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:46:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:46:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 19:46:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:46:54,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:46:54,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:46:54,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:46:54,628 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:46:54,628 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 19:46:54,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:54 BoogieIcfgContainer [2022-11-20 19:46:54,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:46:54,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:46:54,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:46:54,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:46:54,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:46:52" (1/3) ... [2022-11-20 19:46:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fc4b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:54, skipping insertion in model container [2022-11-20 19:46:54,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:53" (2/3) ... [2022-11-20 19:46:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fc4b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:54, skipping insertion in model container [2022-11-20 19:46:54,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:54" (3/3) ... [2022-11-20 19:46:54,641 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_31_good.i [2022-11-20 19:46:54,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:46:54,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 19:46:54,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:46:54,727 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c0a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:46:54,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 19:46:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 19:46:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 19:46:54,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:54,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 19:46:54,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 19:46:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1526916862, now seen corresponding path program 1 times [2022-11-20 19:46:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:54,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824410263] [2022-11-20 19:46:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:54,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:46:55,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:55,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824410263] [2022-11-20 19:46:55,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824410263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:55,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:55,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:46:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854083507] [2022-11-20 19:46:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,168 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 19:46:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:55,240 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-20 19:46:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:55,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 6 [2022-11-20 19:46:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:55,249 INFO L225 Difference]: With dead ends: 27 [2022-11-20 19:46:55,249 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 19:46:55,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,261 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:55,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 19:46:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 19:46:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:46:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-20 19:46:55,299 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2022-11-20 19:46:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:55,300 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-20 19:46:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 19:46:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-20 19:46:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 19:46:55,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:55,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:46:55,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 19:46:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -89782418, now seen corresponding path program 1 times [2022-11-20 19:46:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089736668] [2022-11-20 19:46:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:46:55,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089736668] [2022-11-20 19:46:55,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089736668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:55,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:55,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:46:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728954769] [2022-11-20 19:46:55,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,408 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 19:46:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:55,422 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-20 19:46:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:55,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2022-11-20 19:46:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:55,429 INFO L225 Difference]: With dead ends: 20 [2022-11-20 19:46:55,429 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 19:46:55,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,431 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:55,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:55,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 19:46:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 19:46:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:46:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-20 19:46:55,436 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-11-20 19:46:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:55,437 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-20 19:46:55,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 19:46:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-20 19:46:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 19:46:55,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:55,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:55,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:46:55,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 19:46:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1652473791, now seen corresponding path program 1 times [2022-11-20 19:46:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:55,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523360983] [2022-11-20 19:46:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:46:55,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:55,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523360983] [2022-11-20 19:46:55,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523360983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:55,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:55,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914747805] [2022-11-20 19:46:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:55,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:55,683 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:55,729 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 19:46:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:46:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-20 19:46:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:55,730 INFO L225 Difference]: With dead ends: 19 [2022-11-20 19:46:55,731 INFO L226 Difference]: Without dead ends: 18 [2022-11-20 19:46:55,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:55,732 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:55,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-20 19:46:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 19:46:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:46:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-20 19:46:55,744 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-11-20 19:46:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:55,744 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-20 19:46:55,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-20 19:46:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:46:55,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:55,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:55,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:46:55,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 19:46:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:55,747 INFO L85 PathProgramCache]: Analyzing trace with hash -312919965, now seen corresponding path program 1 times [2022-11-20 19:46:55,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:55,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738912921] [2022-11-20 19:46:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:46:55,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:55,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738912921] [2022-11-20 19:46:55,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738912921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:55,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:55,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:46:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310564315] [2022-11-20 19:46:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,794 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:55,811 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-20 19:46:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-20 19:46:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:55,812 INFO L225 Difference]: With dead ends: 18 [2022-11-20 19:46:55,812 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:46:55,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:55,814 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:55,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:46:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:46:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:46:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:46:55,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-20 19:46:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:55,817 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:46:55,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:46:55,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:46:55,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-20 19:46:55,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-20 19:46:55,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-20 19:46:55,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-20 19:46:55,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:46:55,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 19:46:55,858 INFO L902 garLoopResultBuilder]: At program point printLineENTRY(lines 1412 1418) the Hoare annotation is: true [2022-11-20 19:46:55,858 INFO L899 garLoopResultBuilder]: For program point printLineEXIT(lines 1412 1418) no Hoare annotation was computed. [2022-11-20 19:46:55,859 INFO L899 garLoopResultBuilder]: For program point printIntLineEXIT(lines 1426 1429) no Hoare annotation was computed. [2022-11-20 19:46:55,859 INFO L902 garLoopResultBuilder]: At program point printIntLineENTRY(lines 1426 1429) the Hoare annotation is: true [2022-11-20 19:46:55,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1557) no Hoare annotation was computed. [2022-11-20 19:46:55,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 19:46:55,860 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1582) no Hoare annotation was computed. [2022-11-20 19:46:55,860 INFO L899 garLoopResultBuilder]: For program point L1557(line 1557) no Hoare annotation was computed. [2022-11-20 19:46:55,860 INFO L899 garLoopResultBuilder]: For program point L1557-1(line 1557) no Hoare annotation was computed. [2022-11-20 19:46:55,860 INFO L899 garLoopResultBuilder]: For program point L1582(line 1582) no Hoare annotation was computed. [2022-11-20 19:46:55,860 INFO L899 garLoopResultBuilder]: For program point L1582-1(line 1582) no Hoare annotation was computed. [2022-11-20 19:46:55,861 INFO L899 garLoopResultBuilder]: For program point L1580(lines 1580 1588) no Hoare annotation was computed. [2022-11-20 19:46:55,861 INFO L895 garLoopResultBuilder]: At program point L1574(line 1574) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_goodG2B_~data~1#1| 2))) (and (<= .cse0 0) (<= |ULTIMATE.start_goodB2G_~data~2#1| 2147483647) (<= 0 .cse0))) [2022-11-20 19:46:55,861 INFO L899 garLoopResultBuilder]: For program point L1574-1(lines 1568 1575) no Hoare annotation was computed. [2022-11-20 19:46:55,862 INFO L895 garLoopResultBuilder]: At program point L1601(line 1601) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-20 19:46:55,862 INFO L899 garLoopResultBuilder]: For program point L1568(lines 1568 1575) no Hoare annotation was computed. [2022-11-20 19:46:55,862 INFO L895 garLoopResultBuilder]: At program point L1601-1(line 1601) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-20 19:46:55,862 INFO L902 garLoopResultBuilder]: At program point L1599(line 1599) the Hoare annotation is: true [2022-11-20 19:46:55,863 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1557) no Hoare annotation was computed. [2022-11-20 19:46:55,863 INFO L899 garLoopResultBuilder]: For program point L1599-1(line 1599) no Hoare annotation was computed. [2022-11-20 19:46:55,863 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1582) no Hoare annotation was computed. [2022-11-20 19:46:55,863 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 19:46:55,863 INFO L895 garLoopResultBuilder]: At program point L1558(line 1558) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_goodG2B_~data~1#1| 2))) (and (<= .cse0 0) (<= 0 .cse0))) [2022-11-20 19:46:55,864 INFO L899 garLoopResultBuilder]: For program point L1558-1(lines 1548 1561) no Hoare annotation was computed. [2022-11-20 19:46:55,864 INFO L895 garLoopResultBuilder]: At program point L1587(line 1587) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-20 19:46:55,864 INFO L899 garLoopResultBuilder]: For program point L1587-1(lines 1562 1590) no Hoare annotation was computed. [2022-11-20 19:46:55,864 INFO L895 garLoopResultBuilder]: At program point L1583(line 1583) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-20 19:46:55,868 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 19:46:55,870 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:46:55,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:46:55 BoogieIcfgContainer [2022-11-20 19:46:55,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:46:55,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:46:55,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:46:55,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:46:55,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:54" (3/4) ... [2022-11-20 19:46:55,889 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:46:55,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-20 19:46:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2022-11-20 19:46:55,899 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-20 19:46:55,899 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 19:46:55,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 19:46:55,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:46:55,938 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:46:55,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:46:55,939 INFO L158 Benchmark]: Toolchain (without parser) took 3088.82ms. Allocated memory is still 148.9MB. Free memory was 106.7MB in the beginning and 60.5MB in the end (delta: 46.2MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,939 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:46:55,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1117.82ms. Allocated memory is still 148.9MB. Free memory was 106.1MB in the beginning and 69.7MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.41ms. Allocated memory is still 148.9MB. Free memory was 69.1MB in the beginning and 66.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,940 INFO L158 Benchmark]: Boogie Preprocessor took 56.11ms. Allocated memory is still 148.9MB. Free memory was 66.3MB in the beginning and 64.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,940 INFO L158 Benchmark]: RCFGBuilder took 525.15ms. Allocated memory is still 148.9MB. Free memory was 64.9MB in the beginning and 49.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,941 INFO L158 Benchmark]: TraceAbstraction took 1250.49ms. Allocated memory is still 148.9MB. Free memory was 48.9MB in the beginning and 63.5MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:46:55,941 INFO L158 Benchmark]: Witness Printer took 53.11ms. Allocated memory is still 148.9MB. Free memory was 63.5MB in the beginning and 60.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:55,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1117.82ms. Allocated memory is still 148.9MB. Free memory was 106.1MB in the beginning and 69.7MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.41ms. Allocated memory is still 148.9MB. Free memory was 69.1MB in the beginning and 66.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.11ms. Allocated memory is still 148.9MB. Free memory was 66.3MB in the beginning and 64.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 525.15ms. Allocated memory is still 148.9MB. Free memory was 64.9MB in the beginning and 49.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1250.49ms. Allocated memory is still 148.9MB. Free memory was 48.9MB in the beginning and 63.5MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.11ms. Allocated memory is still 148.9MB. Free memory was 63.5MB in the beginning and 60.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1582]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1582]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 64 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 48 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 1601]: Loop Invariant Derived loop invariant: data + 2 <= 0 RESULT: Ultimate proved your program to be correct! [2022-11-20 19:46:55,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83770628-4109-4d08-a5db-beee1681a734/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE