./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/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 de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 --- 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 07:48:08,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:48:08,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:48:08,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:48:08,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:48:08,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:48:08,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:48:08,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:48:08,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:48:08,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:48:08,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:48:08,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:48:08,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:48:08,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:48:08,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:48:08,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:48:08,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:48:08,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:48:08,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:48:08,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:48:08,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:48:08,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:48:08,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:48:08,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:48:08,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:48:08,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:48:08,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:48:08,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:48:08,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:48:08,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:48:08,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:48:08,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:48:08,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:48:08,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:48:08,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:48:08,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:48:08,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:48:08,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:48:08,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:48:08,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:48:08,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:48:08,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:48:08,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:48:08,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:48:08,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:48:08,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:48:08,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:48:08,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:48:08,910 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:48:08,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:48:08,910 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:48:08,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:48:08,911 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:48:08,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:48:08,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:48:08,912 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:48:08,912 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:48:08,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:48:08,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:48:08,913 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:48:08,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:48:08,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:48:08,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:48:08,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:48:08,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:48:08,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:48:08,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:48:08,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:48:08,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:48:08,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:48:08,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:48:08,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:48:08,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:48:08,919 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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 [2022-11-19 07:48:09,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:48:09,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:48:09,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:48:09,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:48:09,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:48:09,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-19 07:48:09,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/data/5aee33c88/b381829a5cfd4b7ca13d0065f46b113f/FLAG8252ea579 [2022-11-19 07:48:09,890 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:48:09,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-19 07:48:09,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/data/5aee33c88/b381829a5cfd4b7ca13d0065f46b113f/FLAG8252ea579 [2022-11-19 07:48:10,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/data/5aee33c88/b381829a5cfd4b7ca13d0065f46b113f [2022-11-19 07:48:10,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:48:10,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:48:10,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:48:10,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:48:10,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:48:10,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abfb557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10, skipping insertion in model container [2022-11-19 07:48:10,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:48:10,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:48:10,614 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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-19 07:48:10,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:48:10,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:48:10,780 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_2fd828e4-ff70-4eca-acb4-a7eb2442044d/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-19 07:48:10,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:48:10,801 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:48:10,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10 WrapperNode [2022-11-19 07:48:10,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:48:10,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:48:10,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:48:10,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:48:10,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,884 INFO L138 Inliner]: procedures = 17, calls = 293, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 772 [2022-11-19 07:48:10,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:48:10,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:48:10,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:48:10,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:48:10,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:48:10,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:48:10,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:48:10,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:48:10,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (1/1) ... [2022-11-19 07:48:10,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:48:10,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:11,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:48:11,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:48:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:48:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-11-19 07:48:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:48:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:48:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:48:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:48:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:48:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:48:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:48:11,182 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:48:11,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:48:12,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:48:12,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:48:12,235 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:48:12,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:12 BoogieIcfgContainer [2022-11-19 07:48:12,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:48:12,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:48:12,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:48:12,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:48:12,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:10" (1/3) ... [2022-11-19 07:48:12,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530008d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:12, skipping insertion in model container [2022-11-19 07:48:12,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:10" (2/3) ... [2022-11-19 07:48:12,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530008d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:12, skipping insertion in model container [2022-11-19 07:48:12,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:12" (3/3) ... [2022-11-19 07:48:12,257 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2022-11-19 07:48:12,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:48:12,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:48:12,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:48:12,342 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;@784d8f70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:48:12,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:48:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:48:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 07:48:12,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:12,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:12,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash -352673803, now seen corresponding path program 1 times [2022-11-19 07:48:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:12,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331752189] [2022-11-19 07:48:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:48:14,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:14,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331752189] [2022-11-19 07:48:14,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331752189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:14,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:14,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-19 07:48:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805245148] [2022-11-19 07:48:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:14,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:48:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:48:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:48:14,166 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 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 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:48:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:14,933 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2022-11-19 07:48:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:48:14,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 43 [2022-11-19 07:48:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:14,948 INFO L225 Difference]: With dead ends: 81 [2022-11-19 07:48:14,948 INFO L226 Difference]: Without dead ends: 52 [2022-11-19 07:48:14,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:48:14,961 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 96 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:14,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 399 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:48:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-19 07:48:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-11-19 07:48:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 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) [2022-11-19 07:48:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-11-19 07:48:15,000 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2022-11-19 07:48:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-11-19 07:48:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:48:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-11-19 07:48:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 07:48:15,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:15,003 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:48:15,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash -530558132, now seen corresponding path program 1 times [2022-11-19 07:48:15,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080791035] [2022-11-19 07:48:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:48:16,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080791035] [2022-11-19 07:48:16,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080791035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:48:16,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685567957] [2022-11-19 07:48:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:16,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:16,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:16,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:16,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:48:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:16,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:48:16,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:48:16,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:48:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:48:17,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685567957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:48:17,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1836795252] [2022-11-19 07:48:17,266 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-19 07:48:17,266 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:48:17,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:48:17,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:48:17,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:48:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:17,770 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-19 07:48:17,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-19 07:48:17,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:17,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-19 07:48:18,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-19 07:48:18,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:18,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:18,889 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-19 07:48:18,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-19 07:48:19,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:19,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:19,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:19,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 138 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 134 [2022-11-19 07:48:19,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-19 07:48:39,252 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:48:52,461 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:03,666 WARN L233 SmtUtils]: Spent 10.71s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:15,383 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:26,817 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:38,516 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:50,667 WARN L233 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:02,712 WARN L233 SmtUtils]: Spent 11.51s on a formula simplification. DAG size of input: 1113 DAG size of output: 1039 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:15,009 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 1121 DAG size of output: 1045 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:27,741 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 1136 DAG size of output: 1059 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:40,654 WARN L233 SmtUtils]: Spent 12.26s on a formula simplification. DAG size of input: 1142 DAG size of output: 1060 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:53,699 WARN L233 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 1150 DAG size of output: 1066 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:07,130 WARN L233 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 1165 DAG size of output: 1080 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:20,646 WARN L233 SmtUtils]: Spent 12.81s on a formula simplification. DAG size of input: 1165 DAG size of output: 1075 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:34,603 WARN L233 SmtUtils]: Spent 13.19s on a formula simplification. DAG size of input: 1173 DAG size of output: 1081 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:49,381 WARN L233 SmtUtils]: Spent 13.97s on a formula simplification. DAG size of input: 1188 DAG size of output: 1095 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:03,831 WARN L233 SmtUtils]: Spent 13.67s on a formula simplification. DAG size of input: 1192 DAG size of output: 1094 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:18,750 WARN L233 SmtUtils]: Spent 14.09s on a formula simplification. DAG size of input: 1200 DAG size of output: 1100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:34,067 WARN L233 SmtUtils]: Spent 14.39s on a formula simplification. DAG size of input: 1215 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:49,652 WARN L233 SmtUtils]: Spent 14.62s on a formula simplification. DAG size of input: 1219 DAG size of output: 1113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:05,215 WARN L233 SmtUtils]: Spent 14.59s on a formula simplification. DAG size of input: 1227 DAG size of output: 1119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:21,568 WARN L233 SmtUtils]: Spent 15.31s on a formula simplification. DAG size of input: 1242 DAG size of output: 1133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:37,647 WARN L233 SmtUtils]: Spent 15.05s on a formula simplification. DAG size of input: 1246 DAG size of output: 1132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:54,037 WARN L233 SmtUtils]: Spent 15.30s on a formula simplification. DAG size of input: 1254 DAG size of output: 1138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:11,081 WARN L233 SmtUtils]: Spent 15.91s on a formula simplification. DAG size of input: 1269 DAG size of output: 1152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:28,126 WARN L233 SmtUtils]: Spent 15.94s on a formula simplification. DAG size of input: 1273 DAG size of output: 1151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:45,499 WARN L233 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 1281 DAG size of output: 1157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:03,854 WARN L233 SmtUtils]: Spent 17.15s on a formula simplification. DAG size of input: 1296 DAG size of output: 1171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:08,440 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '541#(and (<= |ULTIMATE.start_main_~__tmp_9~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_6~0#1| 1) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~5#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1|) (<= 0 ~__tmp_1075_2~0.base) (<= 1 ~__tmp_1075_1~0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 4 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~4#1| 1) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~4#1.base|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 1) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= ~__tmp_1075_1~0 1) (<= |ULTIMATE.start_main_~__tmp_8~0#1| 1) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset|) (<= |ULTIMATE.start_main_~__tmp_7~0#1| 1) (<= 1 |ULTIMATE.start_main_~__tmp_9~0#1|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~1#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~1#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1| 1) (<= |ULTIMATE.start_main_~__tmp_10~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_5~0#1| 1) (not (< (mod ~Id_MCDC_93~0 4294967296) 42)) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~6#1.base|) (<= 1 |ULTIMATE.start_main_~__tmp_10~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1| 0) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1|) (<= 1 |ULTIMATE.start_main_~__tmp_6~0#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1| 1) (<= 8 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~8#1|) (<= 1 |ULTIMATE.start_main_~__tmp_7~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~3#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~8#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.base|) (<= 5 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1|) (<= 3 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1|) (<= 1 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_5~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~0#1| 0) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1| 6) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1| 5) (<= 1 |ULTIMATE.start_main_~__tmp_8~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_4~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~7#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~3#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~2#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~2#1| 1) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (= |ULTIMATE.start_main_~__tmp_12~0#1| |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1| 4) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1| 1) (<= 6 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~5#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1| 1) (<= 7 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1| 2) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 9 ~Id_MCDC_93~0) (<= 8 ~__tmp_1075_0~0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1| 1) (<= 9 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1| 1) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~9#1| 0) (= ~__return_main~0 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1| 7) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1|) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1| 3) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~7#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1|) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~6#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1|))' at error location [2022-11-19 07:55:08,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:55:08,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:55:08,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 30 [2022-11-19 07:55:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067485192] [2022-11-19 07:55:08,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:55:08,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:55:08,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:55:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3191, Unknown=0, NotChecked=0, Total=3906 [2022-11-19 07:55:08,446 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:55:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:16,257 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-11-19 07:55:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:55:16,258 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 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 48 [2022-11-19 07:55:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:16,260 INFO L225 Difference]: With dead ends: 114 [2022-11-19 07:55:16,260 INFO L226 Difference]: Without dead ends: 111 [2022-11-19 07:55:16,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 396.6s TimeCoverageRelationStatistics Valid=1491, Invalid=5481, Unknown=0, NotChecked=0, Total=6972 [2022-11-19 07:55:16,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 637 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:16,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 204 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:55:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-19 07:55:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-11-19 07:55:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:55:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-11-19 07:55:16,276 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 48 [2022-11-19 07:55:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-11-19 07:55:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:55:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-11-19 07:55:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:55:16,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:16,280 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:16,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:55:16,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 07:55:16,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1651985676, now seen corresponding path program 2 times [2022-11-19 07:55:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15692006] [2022-11-19 07:55:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:18,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15692006] [2022-11-19 07:55:18,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15692006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:55:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771091662] [2022-11-19 07:55:18,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:55:18,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:18,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:18,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd828e4-ff70-4eca-acb4-a7eb2442044d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:55:19,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:55:19,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:55:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 07:55:19,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:19,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:20,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:55:20,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 22 [2022-11-19 07:55:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-19 07:55:20,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-19 07:55:23,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771091662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:23,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609332465] [2022-11-19 07:55:23,694 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-19 07:55:23,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:55:23,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:55:23,695 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:55:23,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:55:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,038 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-19 07:55:24,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-19 07:55:24,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-19 07:55:24,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-19 07:55:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:24,738 INFO L321 Elim1Store]: treesize reduction 130, result has 47.6 percent of original size [2022-11-19 07:55:24,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 125 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 13 case distinctions, treesize of input 87 treesize of output 186 [2022-11-19 07:55:24,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-19 07:55:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:25,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:25,405 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-19 07:55:25,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-19 07:55:44,868 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:55:58,614 WARN L233 SmtUtils]: Spent 10.66s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:10,623 WARN L233 SmtUtils]: Spent 11.04s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:23,027 WARN L233 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:35,118 WARN L233 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:47,330 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:00,135 WARN L233 SmtUtils]: Spent 11.72s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:12,602 WARN L233 SmtUtils]: Spent 11.48s on a formula simplification. DAG size of input: 1100 DAG size of output: 1027 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:25,256 WARN L233 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 1109 DAG size of output: 1033 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:38,307 WARN L233 SmtUtils]: Spent 11.97s on a formula simplification. DAG size of input: 1126 DAG size of output: 1050 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:51,424 WARN L233 SmtUtils]: Spent 11.99s on a formula simplification. DAG size of input: 1132 DAG size of output: 1051 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:04,744 WARN L233 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 1140 DAG size of output: 1057 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:18,678 WARN L233 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 1155 DAG size of output: 1071 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:32,698 WARN L233 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 1161 DAG size of output: 1072 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:46,974 WARN L233 SmtUtils]: Spent 13.01s on a formula simplification. DAG size of input: 1169 DAG size of output: 1078 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:01,726 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 1184 DAG size of output: 1092 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:16,613 WARN L233 SmtUtils]: Spent 13.58s on a formula simplification. DAG size of input: 1184 DAG size of output: 1087 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:31,746 WARN L233 SmtUtils]: Spent 13.73s on a formula simplification. DAG size of input: 1192 DAG size of output: 1093 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:47,592 WARN L233 SmtUtils]: Spent 14.41s on a formula simplification. DAG size of input: 1207 DAG size of output: 1107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:03,589 WARN L233 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 1213 DAG size of output: 1108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:20,495 WARN L233 SmtUtils]: Spent 15.31s on a formula simplification. DAG size of input: 1221 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:39,337 WARN L233 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 1236 DAG size of output: 1128 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:58,495 WARN L233 SmtUtils]: Spent 17.18s on a formula simplification. DAG size of input: 1242 DAG size of output: 1129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:18,382 WARN L233 SmtUtils]: Spent 18.01s on a formula simplification. DAG size of input: 1250 DAG size of output: 1135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:39,259 WARN L233 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 1265 DAG size of output: 1149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:57,726 WARN L233 SmtUtils]: Spent 16.64s on a formula simplification. DAG size of input: 1271 DAG size of output: 1150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)