./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 460506a141aea77ccc3566603556d6eb3051804be1f001a5f66c36de73c2b800 --- 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-8393723 [2022-11-19 06:31:10,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:31:10,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:31:10,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:31:10,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:31:10,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:31:10,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:31:10,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:31:10,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:31:10,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:31:10,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:31:10,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:31:10,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:31:10,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:31:10,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:31:10,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:31:10,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:31:10,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:31:10,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:31:10,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:31:10,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:31:10,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:31:10,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:31:10,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:31:10,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:31:10,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:31:10,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:31:10,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:31:10,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:31:10,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:31:10,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:31:10,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:31:10,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:31:10,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:31:10,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:31:10,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:31:10,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:31:10,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:31:10,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:31:10,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:31:10,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:31:10,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:31:10,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:31:10,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:31:10,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:31:10,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:31:10,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:31:10,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:31:10,843 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:31:10,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:31:10,843 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:31:10,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:31:10,843 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:31:10,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:31:10,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:31:10,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:31:10,844 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:31:10,844 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:31:10,845 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:31:10,845 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:31:10,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:31:10,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:31:10,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:31:10,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:31:10,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:31:10,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:31:10,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:31:10,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:31:10,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:31:10,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:31:10,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:31:10,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:31:10,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:31:10,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:31:10,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:31:10,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:31:10,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:31:10,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:31:10,850 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_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 460506a141aea77ccc3566603556d6eb3051804be1f001a5f66c36de73c2b800 [2022-11-19 06:31:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:31:11,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:31:11,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:31:11,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:31:11,207 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:31:11,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c [2022-11-19 06:31:11,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/data/dac0b153d/00cb24a2c02e493aa0bea49375ab3599/FLAG0faf9e21e [2022-11-19 06:31:11,836 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:31:11,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c [2022-11-19 06:31:11,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/data/dac0b153d/00cb24a2c02e493aa0bea49375ab3599/FLAG0faf9e21e [2022-11-19 06:31:12,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/data/dac0b153d/00cb24a2c02e493aa0bea49375ab3599 [2022-11-19 06:31:12,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:31:12,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:31:12,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:31:12,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:31:12,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:31:12,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c4fc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12, skipping insertion in model container [2022-11-19 06:31:12,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:31:12,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:31:12,527 WARN L234 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_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c[552,565] [2022-11-19 06:31:12,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:31:12,592 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:31:12,616 WARN L234 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_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c[552,565] [2022-11-19 06:31:12,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:31:12,668 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:31:12,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12 WrapperNode [2022-11-19 06:31:12,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:31:12,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:31:12,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:31:12,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:31:12,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,731 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2022-11-19 06:31:12,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:31:12,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:31:12,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:31:12,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:31:12,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:31:12,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:31:12,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:31:12,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:31:12,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2022-11-19 06:31:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:31:12,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:31:12,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:31:12,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:31:12,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:31:12,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:31:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:31:12,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:31:12,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:31:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:31:12,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:31:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:31:12,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:31:12,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:31:13,171 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:31:13,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:31:13,201 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:31:13,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:13 BoogieIcfgContainer [2022-11-19 06:31:13,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:31:13,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:31:13,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:31:13,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:31:13,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:12" (1/3) ... [2022-11-19 06:31:13,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130bd0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:13, skipping insertion in model container [2022-11-19 06:31:13,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (2/3) ... [2022-11-19 06:31:13,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130bd0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:13, skipping insertion in model container [2022-11-19 06:31:13,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:13" (3/3) ... [2022-11-19 06:31:13,219 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound10.c [2022-11-19 06:31:13,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:31:13,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:31:13,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:31:13,306 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;@32df95db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:31:13,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:31:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:31:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 06:31:13,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:31:13,323 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:31:13,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:31:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:31:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1397202741, now seen corresponding path program 1 times [2022-11-19 06:31:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:31:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677346321] [2022-11-19 06:31:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:31:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:31:13,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:31:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889591151] [2022-11-19 06:31:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:31:13,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:31:13,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:31:13,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:31:13,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:31:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:31:13,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 06:31:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:31:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 06:31:13,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:31:13,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:31:13,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677346321] [2022-11-19 06:31:13,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:31:13,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889591151] [2022-11-19 06:31:13,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889591151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:31:13,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:31:13,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 06:31:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204098703] [2022-11-19 06:31:13,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:31:13,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 06:31:13,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:31:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 06:31:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:31:13,981 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:31:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:31:14,447 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2022-11-19 06:31:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:31:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2022-11-19 06:31:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:31:14,458 INFO L225 Difference]: With dead ends: 67 [2022-11-19 06:31:14,458 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 06:31:14,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:31:14,465 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:31:14,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 84 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:31:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 06:31:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-11-19 06:31:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 06:31:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2022-11-19 06:31:14,550 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 26 [2022-11-19 06:31:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:31:14,551 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2022-11-19 06:31:14,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:31:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2022-11-19 06:31:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 06:31:14,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:31:14,557 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:31:14,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:31:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:31:14,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:31:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:31:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1256891329, now seen corresponding path program 1 times [2022-11-19 06:31:14,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:31:14,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796341002] [2022-11-19 06:31:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:31:14,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:31:14,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:31:14,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700895748] [2022-11-19 06:31:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:31:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:31:14,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:31:14,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:31:14,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbde9a7-4229-44df-aaa4-fe452a9d7cc6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process