./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash 1b503f9744330c40db60063d7713649b00b515fae7df517a0a6da071e866822e --- 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-2329fc7 [2022-12-14 07:11:27,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:11:27,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:11:27,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:11:27,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:11:27,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:11:27,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:11:27,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:11:27,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:11:27,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:11:27,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:11:27,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:11:27,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:11:27,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:11:27,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:11:27,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:11:27,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:11:27,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:11:27,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:11:27,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:11:27,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:11:27,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:11:27,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:11:27,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:11:27,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:11:27,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:11:27,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:11:27,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:11:27,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:11:27,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:11:27,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:11:27,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:11:27,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:11:27,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:11:27,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:11:27,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:11:27,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:11:27,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:11:27,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:11:27,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:11:27,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:11:27,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 07:11:27,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:11:27,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:11:27,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:11:27,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:11:27,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:11:27,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:11:27,779 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:11:27,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:11:27,779 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:11:27,780 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:11:27,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:11:27,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:11:27,781 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:11:27,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:11:27,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:11:27,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:11:27,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:11:27,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:11:27,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:11:27,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:11:27,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:11:27,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:11:27,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:11:27,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:11:27,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:11:27,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:11:27,785 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_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b503f9744330c40db60063d7713649b00b515fae7df517a0a6da071e866822e [2022-12-14 07:11:27,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:11:27,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:11:27,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:11:27,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:11:27,995 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:11:27,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2022-12-14 07:11:30,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:11:30,678 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:11:30,678 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2022-12-14 07:11:30,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/data/85c436043/aad640f7ef124c22a4636b5c0917d3fd/FLAG1ac81f586 [2022-12-14 07:11:30,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/data/85c436043/aad640f7ef124c22a4636b5c0917d3fd [2022-12-14 07:11:30,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:11:30,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:11:30,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:11:30,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:11:30,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:11:30,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1515765e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30, skipping insertion in model container [2022-12-14 07:11:30,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:11:30,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:11:30,851 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2022-12-14 07:11:30,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:11:30,867 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:11:30,877 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2022-12-14 07:11:30,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:11:30,889 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:11:30,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30 WrapperNode [2022-12-14 07:11:30,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:11:30,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:11:30,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:11:30,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:11:30,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,915 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-12-14 07:11:30,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:11:30,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:11:30,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:11:30,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:11:30,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:11:30,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:11:30,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:11:30,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:11:30,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (1/1) ... [2022-12-14 07:11:30,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:11:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:30,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:11:30,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:11:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:11:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:11:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:11:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:11:31,035 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:11:31,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:11:31,122 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:11:31,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:11:31,140 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:11:31,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:11:31 BoogieIcfgContainer [2022-12-14 07:11:31,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:11:31,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:11:31,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:11:31,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:11:31,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:11:30" (1/3) ... [2022-12-14 07:11:31,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641d1709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:11:31, skipping insertion in model container [2022-12-14 07:11:31,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:11:30" (2/3) ... [2022-12-14 07:11:31,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641d1709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:11:31, skipping insertion in model container [2022-12-14 07:11:31,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:11:31" (3/3) ... [2022-12-14 07:11:31,148 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2022-12-14 07:11:31,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:11:31,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:11:31,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:11:31,202 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;@726206be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:11:31,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:11:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-12-14 07:11:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:11:31,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:31,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:11:31,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1973446, now seen corresponding path program 1 times [2022-12-14 07:11:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:31,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364360620] [2022-12-14 07:11:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:31,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:31,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:31,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364360620] [2022-12-14 07:11:31,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364360620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:11:31,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:11:31,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:11:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051620843] [2022-12-14 07:11:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:11:31,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:11:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:11:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:11:31,380 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 07:11:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:31,410 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-12-14 07:11:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:11:31,412 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), 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) Word has length 4 [2022-12-14 07:11:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:31,418 INFO L225 Difference]: With dead ends: 11 [2022-12-14 07:11:31,418 INFO L226 Difference]: Without dead ends: 6 [2022-12-14 07:11:31,420 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 [2022-12-14 07:11:31,422 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:11:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-12-14 07:11:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-14 07:11:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-12-14 07:11:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-12-14 07:11:31,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-12-14 07:11:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-12-14 07:11:31,446 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), 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) [2022-12-14 07:11:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-12-14 07:11:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:11:31,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:31,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:11:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:11:31,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 61176876, now seen corresponding path program 1 times [2022-12-14 07:11:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15419027] [2022-12-14 07:11:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:31,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:31,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15419027] [2022-12-14 07:11:31,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15419027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:11:31,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:11:31,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:11:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61307490] [2022-12-14 07:11:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:11:31,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:11:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:11:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:11:31,492 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:11:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:31,504 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-12-14 07:11:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:11:31,505 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), 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) Word has length 5 [2022-12-14 07:11:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:31,505 INFO L225 Difference]: With dead ends: 10 [2022-12-14 07:11:31,505 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 07:11:31,506 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 [2022-12-14 07:11:31,507 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:31,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:11:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 07:11:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 07:11:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-12-14 07:11:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 07:11:31,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 07:11:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:31,517 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 07:11:31,517 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), 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) [2022-12-14 07:11:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 07:11:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:11:31,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:31,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 07:11:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:11:31,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1454225156, now seen corresponding path program 1 times [2022-12-14 07:11:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029051580] [2022-12-14 07:11:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:31,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029051580] [2022-12-14 07:11:31,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029051580] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508959846] [2022-12-14 07:11:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:31,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:31,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:11:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:31,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:11:31,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:31,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:11:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:31,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508959846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:11:31,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181218517] [2022-12-14 07:11:31,760 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 07:11:31,761 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:11:31,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:11:31,767 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:11:31,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:11:31,994 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:11:32,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '112#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:11:32,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:11:32,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:11:32,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-14 07:11:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692854444] [2022-12-14 07:11:32,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:11:32,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:11:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:11:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:11:32,178 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-12-14 07:11:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:32,211 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-12-14 07:11:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:11:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) Word has length 8 [2022-12-14 07:11:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:32,212 INFO L225 Difference]: With dead ends: 19 [2022-12-14 07:11:32,212 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 07:11:32,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-14 07:11:32,214 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:32,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:11:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 07:11:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 07:11:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-12-14 07:11:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 07:11:32,219 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2022-12-14 07:11:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:32,220 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 07:11:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-12-14 07:11:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 07:11:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 07:11:32,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:32,221 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2022-12-14 07:11:32,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:11:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:32,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -240345556, now seen corresponding path program 2 times [2022-12-14 07:11:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:32,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3011877] [2022-12-14 07:11:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:32,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3011877] [2022-12-14 07:11:32,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3011877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775684558] [2022-12-14 07:11:32,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:11:32,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:32,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:32,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:11:32,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:11:32,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:11:32,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:11:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:32,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:11:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775684558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:11:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526195055] [2022-12-14 07:11:32,771 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 07:11:32,771 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:11:32,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:11:32,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:11:32,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:11:32,924 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:11:33,135 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '278#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:11:33,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:11:33,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:11:33,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-14 07:11:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987561817] [2022-12-14 07:11:33,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:11:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 07:11:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 07:11:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:11:33,137 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 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) [2022-12-14 07:11:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:33,191 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-12-14 07:11:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:11:33,192 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 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) Word has length 17 [2022-12-14 07:11:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:33,193 INFO L225 Difference]: With dead ends: 37 [2022-12-14 07:11:33,193 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:11:33,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2022-12-14 07:11:33,195 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:33,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:11:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:11:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-12-14 07:11:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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) [2022-12-14 07:11:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-12-14 07:11:33,199 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2022-12-14 07:11:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:33,199 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-12-14 07:11:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 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) [2022-12-14 07:11:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-12-14 07:11:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 07:11:33,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:33,201 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2022-12-14 07:11:33,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:11:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:33,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1028501804, now seen corresponding path program 3 times [2022-12-14 07:11:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:33,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116268621] [2022-12-14 07:11:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:33,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:33,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116268621] [2022-12-14 07:11:33,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116268621] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:33,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935596476] [2022-12-14 07:11:33,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:11:33,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:33,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:33,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:11:33,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:11:33,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:11:33,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 07:11:33,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:33,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:11:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:34,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935596476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:11:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807375188] [2022-12-14 07:11:34,076 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 07:11:34,076 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:11:34,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:11:34,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:11:34,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:11:34,163 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:11:34,470 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '618#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:11:34,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:11:34,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:11:34,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-12-14 07:11:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498771733] [2022-12-14 07:11:34,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:11:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 07:11:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 07:11:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=942, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 07:11:34,473 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 35 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 35 states have internal predecessors, (103), 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) [2022-12-14 07:11:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:34,564 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-12-14 07:11:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 07:11:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 35 states have internal predecessors, (103), 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) Word has length 35 [2022-12-14 07:11:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:34,565 INFO L225 Difference]: With dead ends: 73 [2022-12-14 07:11:34,565 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 07:11:34,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=985, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:11:34,567 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:34,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:11:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 07:11:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-12-14 07:11:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 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) [2022-12-14 07:11:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-12-14 07:11:34,575 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35 [2022-12-14 07:11:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:34,575 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-12-14 07:11:34,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 35 states have internal predecessors, (103), 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) [2022-12-14 07:11:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-12-14 07:11:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:11:34,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:34,576 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1] [2022-12-14 07:11:34,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:11:34,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:34,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 734238508, now seen corresponding path program 4 times [2022-12-14 07:11:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091835409] [2022-12-14 07:11:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:35,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:35,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091835409] [2022-12-14 07:11:35,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091835409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:35,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806788683] [2022-12-14 07:11:35,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:11:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:35,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:35,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:35,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:11:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:35,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 07:11:35,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:36,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:11:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:11:36,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806788683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:11:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [93226343] [2022-12-14 07:11:36,521 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 07:11:36,521 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:11:36,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:11:36,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:11:36,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:11:36,603 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:11:37,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1306#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:11:37,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:11:37,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:11:37,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2022-12-14 07:11:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137045444] [2022-12-14 07:11:37,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:11:37,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-12-14 07:11:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-12-14 07:11:37,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2100, Invalid=3450, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 07:11:37,176 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 71 states, 70 states have (on average 3.0142857142857142) internal successors, (211), 71 states have internal predecessors, (211), 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) [2022-12-14 07:11:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:37,265 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2022-12-14 07:11:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 07:11:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.0142857142857142) internal successors, (211), 71 states have internal predecessors, (211), 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) Word has length 71 [2022-12-14 07:11:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:37,267 INFO L225 Difference]: With dead ends: 97 [2022-12-14 07:11:37,267 INFO L226 Difference]: Without dead ends: 96 [2022-12-14 07:11:37,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 139 SyntacticMatches, 23 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5613 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2171, Invalid=3529, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 07:11:37,269 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:37,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:11:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-14 07:11:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-12-14 07:11:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 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) [2022-12-14 07:11:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2022-12-14 07:11:37,275 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 71 [2022-12-14 07:11:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:37,276 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2022-12-14 07:11:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 3.0142857142857142) internal successors, (211), 71 states have internal predecessors, (211), 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) [2022-12-14 07:11:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2022-12-14 07:11:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 07:11:37,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:37,277 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1] [2022-12-14 07:11:37,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:11:37,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 07:11:37,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:11:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1169302740, now seen corresponding path program 5 times [2022-12-14 07:11:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:37,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602737006] [2022-12-14 07:11:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:11:37,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:11:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:11:37,574 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:11:37,574 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:11:37,575 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 07:11:37,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 07:11:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:11:37,579 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2022-12-14 07:11:37,582 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:11:37,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:11:37 BoogieIcfgContainer [2022-12-14 07:11:37,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:11:37,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:11:37,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:11:37,608 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:11:37,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:11:31" (3/4) ... [2022-12-14 07:11:37,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:11:37,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:11:37,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:11:37,643 INFO L158 Benchmark]: Toolchain (without parser) took 6943.69ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 96.6MB in the beginning and 111.4MB in the end (delta: -14.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,644 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:11:37,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.64ms. Allocated memory is still 125.8MB. Free memory was 96.1MB in the beginning and 86.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.75ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 85.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,644 INFO L158 Benchmark]: Boogie Preprocessor took 16.98ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 990.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:11:37,644 INFO L158 Benchmark]: RCFGBuilder took 209.01ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 73.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,645 INFO L158 Benchmark]: TraceAbstraction took 6463.73ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 72.6MB in the beginning and 115.6MB in the end (delta: -43.0MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,645 INFO L158 Benchmark]: Witness Printer took 35.24ms. Allocated memory is still 151.0MB. Free memory was 115.6MB in the beginning and 111.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:11:37,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.64ms. Allocated memory is still 125.8MB. Free memory was 96.1MB in the beginning and 86.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.75ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 85.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.98ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 990.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.01ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 73.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6463.73ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 72.6MB in the beginning and 115.6MB in the end (delta: -43.0MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Witness Printer took 35.24ms. Allocated memory is still 151.0MB. Free memory was 115.6MB in the beginning and 111.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x==1 && y==1)) VAL [x=1, y=1] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2, y=2] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4, y=4] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8, y=8] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16, y=16] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=32, y=32] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=64, y=64] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=128, y=128] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=256, y=256] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=512, y=512] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1024, y=1024] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2048, y=2048] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4096, y=4096] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8192, y=8192] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16384, y=16384] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=32768, y=32768] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=65536, y=65536] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=131072, y=131072] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=262144, y=262144] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=524288, y=524288] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1048576, y=1048576] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2097152, y=2097152] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4194304, y=4194304] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8388608, y=8388608] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16777216, y=16777216] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=33554432, y=33554432] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=67108864, y=67108864] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=134217728, y=134217728] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=268435456, y=268435456] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=536870912, y=536870912] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1073741824, y=1073741824] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y VAL [x=1073741824, y=1073741824] - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 31, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 18 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 438 GetRequests, 252 SyntacticMatches, 41 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7179 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=6, InterpolantAutomatonStates: 80, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 2574 SizeOfPredicates, 8 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2871 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 07:11:37,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7a15b-0cb6-42b4-adc0-4f51fe97b426/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)