./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0 --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- 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-e04fb08 [2022-11-16 19:26:34,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:26:34,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:26:34,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:26:34,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:26:34,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:26:34,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:26:34,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:26:34,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:26:34,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:26:34,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:26:34,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:26:34,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:26:34,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:26:34,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:26:34,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:26:34,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:26:34,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:26:34,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:26:34,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:26:34,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:26:34,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:26:34,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:26:34,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:26:34,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:26:34,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:26:34,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:26:34,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:26:34,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:26:34,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:26:34,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:26:34,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:26:34,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:26:34,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:26:34,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:26:34,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:26:34,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:26:34,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:26:34,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:26:34,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:26:34,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:26:34,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:26:34,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:26:34,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:26:34,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:26:34,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:26:34,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:26:34,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:26:34,987 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:26:34,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:26:34,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:26:34,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:26:34,988 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:26:34,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:26:34,989 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:26:34,989 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:26:34,990 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:26:34,990 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:26:34,990 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:26:34,990 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:26:34,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:26:34,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:26:34,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:26:34,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:26:34,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:26:34,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:26:34,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:26:34,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:26:34,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:26:34,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:26:34,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:26:34,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:26:34,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:26:34,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:26:34,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:34,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:26:34,997 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:26:34,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:26:34,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:26:34,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:26:34,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:26:34,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:26:34,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:26:35,000 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2022-11-16 19:26:35,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:26:35,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:26:35,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:26:35,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:26:35,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:26:35,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-11-16 19:26:35,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/fd554c45a/6dc23305e13544b491a7980e68771557/FLAG42e0ce6ec [2022-11-16 19:26:36,089 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:26:36,090 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-11-16 19:26:36,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/fd554c45a/6dc23305e13544b491a7980e68771557/FLAG42e0ce6ec [2022-11-16 19:26:36,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/fd554c45a/6dc23305e13544b491a7980e68771557 [2022-11-16 19:26:36,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:26:36,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:26:36,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:36,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:26:36,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:26:36,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:36" (1/1) ... [2022-11-16 19:26:36,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbba001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:36, skipping insertion in model container [2022-11-16 19:26:36,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:36" (1/1) ... [2022-11-16 19:26:36,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:26:36,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:26:36,857 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-11-16 19:26:36,993 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-11-16 19:26:37,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:37,023 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:26:37,048 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-11-16 19:26:37,111 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-11-16 19:26:37,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:37,148 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:26:37,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37 WrapperNode [2022-11-16 19:26:37,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:37,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:37,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:26:37,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:26:37,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,255 INFO L138 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-16 19:26:37,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:37,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:26:37,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:26:37,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:26:37,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:26:37,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:26:37,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:26:37,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:26:37,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (1/1) ... [2022-11-16 19:26:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:37,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:26:37,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:26:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:26:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:26:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:26:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:26:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:26:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:26:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:26:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:26:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:26:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:26:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:26:37,785 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:26:37,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:26:39,472 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:26:39,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:26:39,915 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-16 19:26:39,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:39 BoogieIcfgContainer [2022-11-16 19:26:39,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:26:39,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:26:39,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:26:39,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:26:39,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:36" (1/3) ... [2022-11-16 19:26:39,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bfb991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:39, skipping insertion in model container [2022-11-16 19:26:39,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37" (2/3) ... [2022-11-16 19:26:39,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bfb991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:39, skipping insertion in model container [2022-11-16 19:26:39,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:39" (3/3) ... [2022-11-16 19:26:39,935 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2022-11-16 19:26:39,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:26:39,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:26:40,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:26:40,038 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;@69e8f1dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:26:40,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:26:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:26:40,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:40,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:40,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1898435451, now seen corresponding path program 1 times [2022-11-16 19:26:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35136302] [2022-11-16 19:26:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:40,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:40,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35136302] [2022-11-16 19:26:40,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35136302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:40,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:40,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:26:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077969992] [2022-11-16 19:26:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:40,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:26:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:26:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:26:40,308 INFO L87 Difference]: Start difference. First operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 19:26:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:40,840 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2022-11-16 19:26:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:26:40,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 19:26:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:40,856 INFO L225 Difference]: With dead ends: 245 [2022-11-16 19:26:40,856 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 19:26:40,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:26:40,863 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:40,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:26:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 19:26:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-16 19:26:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-11-16 19:26:40,926 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2022-11-16 19:26:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:40,926 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-11-16 19:26:40,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 19:26:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-11-16 19:26:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:26:40,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:40,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:40,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:26:40,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash -94655351, now seen corresponding path program 1 times [2022-11-16 19:26:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:40,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258675519] [2022-11-16 19:26:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:41,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:41,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258675519] [2022-11-16 19:26:41,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258675519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:41,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:41,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:26:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840255376] [2022-11-16 19:26:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:41,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:26:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:26:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:26:41,222 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:43,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 19:26:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:43,909 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2022-11-16 19:26:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:26:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 19:26:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:43,916 INFO L225 Difference]: With dead ends: 258 [2022-11-16 19:26:43,916 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 19:26:43,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:43,918 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:43,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 355 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 19:26:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 19:26:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2022-11-16 19:26:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2022-11-16 19:26:43,933 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2022-11-16 19:26:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:43,933 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2022-11-16 19:26:43,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2022-11-16 19:26:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 19:26:43,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:43,936 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 19:26:43,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:26:43,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash 339208180, now seen corresponding path program 1 times [2022-11-16 19:26:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146044032] [2022-11-16 19:26:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:43,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:44,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:26:44,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27540296] [2022-11-16 19:26:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:44,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:44,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:26:44,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:26:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:44,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:26:44,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:26:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:45,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:26:45,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:45,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146044032] [2022-11-16 19:26:45,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:26:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27540296] [2022-11-16 19:26:45,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27540296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:45,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:45,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:26:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704012270] [2022-11-16 19:26:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:26:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:26:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:45,117 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:46,360 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2022-11-16 19:26:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:26:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-16 19:26:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:46,367 INFO L225 Difference]: With dead ends: 304 [2022-11-16 19:26:46,367 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 19:26:46,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:46,369 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:46,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 19:26:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 19:26:46,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2022-11-16 19:26:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2022-11-16 19:26:46,385 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2022-11-16 19:26:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:46,385 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2022-11-16 19:26:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2022-11-16 19:26:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 19:26:46,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:46,388 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-16 19:26:46,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:26:46,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 19:26:46,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1571641394, now seen corresponding path program 1 times [2022-11-16 19:26:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094378776] [2022-11-16 19:26:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:46,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:26:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032057834] [2022-11-16 19:26:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:46,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:46,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:46,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:26:46,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:26:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:47,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:26:47,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:26:47,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 19:26:47,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 19:26:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 19:26:47,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:26:47,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094378776] [2022-11-16 19:26:47,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:26:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032057834] [2022-11-16 19:26:47,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032057834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:26:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554495473] [2022-11-16 19:26:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:26:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:26:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:26:47,344 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:26:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:49,249 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2022-11-16 19:26:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:26:49,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-16 19:26:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:49,254 INFO L225 Difference]: With dead ends: 231 [2022-11-16 19:26:49,254 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 19:26:49,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:49,256 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:49,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 354 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 19:26:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 19:26:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2022-11-16 19:26:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2022-11-16 19:26:49,271 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2022-11-16 19:26:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:49,272 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2022-11-16 19:26:49,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:26:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2022-11-16 19:26:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 19:26:49,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:49,274 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:49,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 19:26:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:49,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2144578966, now seen corresponding path program 1 times [2022-11-16 19:26:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:49,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123905042] [2022-11-16 19:26:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:49,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:26:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329122586] [2022-11-16 19:26:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:49,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:49,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:49,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:26:49,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:26:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:50,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:26:50,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:26:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 19:26:50,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:26:50,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:50,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123905042] [2022-11-16 19:26:50,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:26:50,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329122586] [2022-11-16 19:26:50,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329122586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:50,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:50,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:26:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908515735] [2022-11-16 19:26:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:50,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:26:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:26:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:26:50,350 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:26:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:51,337 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2022-11-16 19:26:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:26:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-16 19:26:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:51,340 INFO L225 Difference]: With dead ends: 395 [2022-11-16 19:26:51,340 INFO L226 Difference]: Without dead ends: 242 [2022-11-16 19:26:51,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:51,342 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 260 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 290 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 19:26:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-16 19:26:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2022-11-16 19:26:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:26:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2022-11-16 19:26:51,363 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2022-11-16 19:26:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:51,364 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2022-11-16 19:26:51,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:26:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2022-11-16 19:26:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 19:26:51,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:51,366 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:51,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:26:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:51,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:26:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2121750984, now seen corresponding path program 1 times [2022-11-16 19:26:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655009446] [2022-11-16 19:26:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:51,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:26:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770235581] [2022-11-16 19:26:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:26:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:51,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:26:51,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:27:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:04,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:27:04,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:27:04,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:27:04,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655009446] [2022-11-16 19:27:04,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770235581] [2022-11-16 19:27:04,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770235581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:04,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:04,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:27:04,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810373060] [2022-11-16 19:27:04,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:27:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:27:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:27:04,295 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:27:05,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:05,327 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2022-11-16 19:27:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:27:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2022-11-16 19:27:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:05,333 INFO L225 Difference]: With dead ends: 411 [2022-11-16 19:27:05,334 INFO L226 Difference]: Without dead ends: 216 [2022-11-16 19:27:05,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:05,335 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:05,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 19:27:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-16 19:27:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-16 19:27:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:27:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2022-11-16 19:27:05,354 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2022-11-16 19:27:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:05,354 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2022-11-16 19:27:05,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:27:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2022-11-16 19:27:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 19:27:05,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:05,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:05,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:05,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:05,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash -869473738, now seen corresponding path program 1 times [2022-11-16 19:27:05,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:05,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160861431] [2022-11-16 19:27:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:05,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401787214] [2022-11-16 19:27:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:05,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:05,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:05,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:05,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:27:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:43,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:27:43,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:27:43,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:43,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160861431] [2022-11-16 19:27:43,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401787214] [2022-11-16 19:27:43,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401787214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:43,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [370840616] [2022-11-16 19:27:43,653 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-16 19:27:43,653 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:43,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:43,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:43,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:43,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 19:27:43,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 19:27:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,835 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:27:43,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 19:27:43,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 19:27:43,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,877 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:27:43,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 19:27:43,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,968 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:27:43,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2022-11-16 19:27:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,030 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 19:27:44,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 19:27:44,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-16 19:27:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,112 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:27:44,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-16 19:27:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-16 19:27:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 5376288 [2022-11-16 19:27:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897007 treesize of output 5376300 [2022-11-16 19:27:44,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-16 19:27:44,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-16 19:27:44,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 19:27:44,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 19:27:44,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-16 19:27:44,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-16 19:27:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-16 19:27:45,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 19:27:45,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,172 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-16 19:27:45,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-16 19:27:45,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,263 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 19:27:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-16 19:27:45,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 19:27:45,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:27:45,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 19:27:45,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 19:27:45,542 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:27:45,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2022-11-16 19:27:45,574 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-16 19:27:45,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-16 19:27:45,601 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:27:45,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-16 19:27:45,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 19:27:45,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:27:45,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 19:27:45,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-16 19:27:45,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-16 19:27:45,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:45,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-16 19:27:45,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-16 19:27:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:46,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-16 19:27:46,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-16 19:27:47,114 INFO L217 Elim1Store]: Index analysis took 694 ms [2022-11-16 19:27:51,914 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-16 19:27:51,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 9519777 treesize of output 9519796 [2022-11-16 19:27:53,016 INFO L217 Elim1Store]: Index analysis took 899 ms [2022-11-16 19:27:53,645 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-16 19:27:53,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 9519772 treesize of output 9519776 [2022-11-16 19:28:03,093 WARN L233 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:28:03,093 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-16 19:28:03,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1476 [2022-11-16 19:28:03,421 INFO L217 Elim1Store]: Index analysis took 138 ms [2022-11-16 19:28:27,349 WARN L233 SmtUtils]: Spent 23.92s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:28:27,350 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-16 19:28:27,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1834 [2022-11-16 19:28:29,448 INFO L217 Elim1Store]: Index analysis took 1436 ms [2022-11-16 19:29:01,485 WARN L233 SmtUtils]: Spent 30.84s on a formula simplification. DAG size of input: 258 DAG size of output: 156 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:29:01,487 INFO L321 Elim1Store]: treesize reduction 13218, result has 27.3 percent of original size [2022-11-16 19:29:01,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 3622 treesize of output 7921 [2022-11-16 19:29:03,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 69 [2022-11-16 19:29:03,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 55 [2022-11-16 19:29:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:05,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2022-11-16 19:29:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:05,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-16 19:29:06,463 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-16 19:29:09,604 INFO L321 Elim1Store]: treesize reduction 550, result has 14.1 percent of original size [2022-11-16 19:29:09,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 14 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 16 new quantified variables, introduced 18 case distinctions, treesize of input 51016 treesize of output 53256 [2022-11-16 19:29:18,959 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:29:19,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:29:19,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40846 treesize of output 40854 [2022-11-16 19:29:20,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:29:28,850 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 45 DAG size of output: 37 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:29:28,851 INFO L321 Elim1Store]: treesize reduction 185, result has 49.9 percent of original size [2022-11-16 19:29:28,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66514 treesize of output 65984 [2022-11-16 19:29:29,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43142 treesize of output 43102 [2022-11-16 19:29:32,165 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-11-16 19:29:32,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40846 treesize of output 40828 [2022-11-16 19:29:33,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-16 19:29:36,319 INFO L321 Elim1Store]: treesize reduction 45, result has 49.4 percent of original size [2022-11-16 19:29:36,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56608 treesize of output 56496 [2022-11-16 19:30:11,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:12,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:12,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:12,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:13,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,863 INFO L217 Elim1Store]: Index analysis took 7558 ms [2022-11-16 19:30:15,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:15,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 545 treesize of output 4453 [2022-11-16 19:30:16,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-16 19:30:18,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:22,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:23,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,237 INFO L217 Elim1Store]: Index analysis took 7410 ms [2022-11-16 19:30:24,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:24,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2247 [2022-11-16 19:30:25,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:25,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:29,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,154 INFO L217 Elim1Store]: Index analysis took 5544 ms [2022-11-16 19:30:30,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:30,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2257 [2022-11-16 19:30:30,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:30,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:30,647 INFO L217 Elim1Store]: Index analysis took 120 ms [2022-11-16 19:30:30,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-11-16 19:30:31,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:32,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:32,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:34,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:34,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,131 INFO L217 Elim1Store]: Index analysis took 4002 ms [2022-11-16 19:30:35,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:35,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2269 [2022-11-16 19:30:35,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:35,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-16 19:30:35,814 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:30:37,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,904 INFO L217 Elim1Store]: Index analysis took 2004 ms [2022-11-16 19:30:37,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:37,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 40009 treesize of output 43909 [2022-11-16 19:30:43,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:47,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,527 INFO L217 Elim1Store]: Index analysis took 7012 ms [2022-11-16 19:30:49,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:49,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2215 [2022-11-16 19:30:49,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:50,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:50,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 194 [2022-11-16 19:30:50,190 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:30:55,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:55,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:55,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:55,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,648 INFO L217 Elim1Store]: Index analysis took 6281 ms [2022-11-16 19:30:56,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:56,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 507 treesize of output 3942 [2022-11-16 19:30:57,000 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:30:58,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:02,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:02,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,343 INFO L217 Elim1Store]: Index analysis took 6087 ms [2022-11-16 19:31:03,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:03,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2247 [2022-11-16 19:31:03,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:03,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 54 [2022-11-16 19:31:05,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,477 INFO L217 Elim1Store]: Index analysis took 1471 ms [2022-11-16 19:31:05,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:05,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 34295 treesize of output 38205 [2022-11-16 19:31:19,731 INFO L217 Elim1Store]: Index analysis took 9273 ms [2022-11-16 19:31:21,174 INFO L321 Elim1Store]: treesize reduction 538, result has 3.8 percent of original size [2022-11-16 19:31:21,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 14 case distinctions, treesize of input 403 treesize of output 2354 [2022-11-16 19:31:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:21,609 INFO L217 Elim1Store]: Index analysis took 256 ms [2022-11-16 19:31:22,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:31:22,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 87 treesize of output 79 [2022-11-16 19:31:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:22,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-11-16 19:31:27,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:30,198 INFO L217 Elim1Store]: Index analysis took 7548 ms [2022-11-16 19:31:31,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 316 treesize of output 2350 [2022-11-16 19:31:31,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:32,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:33,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:41,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,356 INFO L217 Elim1Store]: Index analysis took 10541 ms [2022-11-16 19:31:42,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:42,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1409 treesize of output 3388 [2022-11-16 19:31:42,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:42,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:42,931 INFO L217 Elim1Store]: Index analysis took 290 ms [2022-11-16 19:31:43,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:31:43,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 1093 treesize of output 919 [2022-11-16 19:31:44,049 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:31:44,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:47,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:50,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:58,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,564 INFO L217 Elim1Store]: Index analysis took 16741 ms [2022-11-16 19:32:01,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 573 treesize of output 2471 [2022-11-16 19:32:02,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:02,592 INFO L217 Elim1Store]: Index analysis took 435 ms [2022-11-16 19:32:03,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:32:03,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 257 treesize of output 221 [2022-11-16 19:32:03,925 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:32:05,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:05,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:06,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:08,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:08,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,719 INFO L217 Elim1Store]: Index analysis took 4531 ms [2022-11-16 19:32:08,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:08,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 2287 [2022-11-16 19:32:08,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2022-11-16 19:32:09,359 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:33:32,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:34,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:34,809 INFO L217 Elim1Store]: Index analysis took 2568 ms [2022-11-16 19:33:34,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 15 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1905 treesize of output 16050 [2022-11-16 19:33:36,564 INFO L217 Elim1Store]: Index analysis took 509 ms [2022-11-16 19:35:23,452 WARN L233 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 222 DAG size of output: 42 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:35:23,454 INFO L321 Elim1Store]: treesize reduction 1365, result has 5.7 percent of original size [2022-11-16 19:35:23,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 38 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 33 new quantified variables, introduced 68 case distinctions, treesize of input 5645 treesize of output 94048 [2022-11-16 19:37:44,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:37:44,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:37:44,299 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 19:37:44,304 INFO L158 Benchmark]: Toolchain (without parser) took 667989.98ms. Allocated memory was 94.4MB in the beginning and 685.8MB in the end (delta: 591.4MB). Free memory was 50.0MB in the beginning and 359.7MB in the end (delta: -309.7MB). Peak memory consumption was 430.6MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,304 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:37:44,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 829.77ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 47.5MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.90ms. Allocated memory is still 94.4MB. Free memory was 47.5MB in the beginning and 40.3MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,305 INFO L158 Benchmark]: Boogie Preprocessor took 143.14ms. Allocated memory is still 94.4MB. Free memory was 40.3MB in the beginning and 66.6MB in the end (delta: -26.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,305 INFO L158 Benchmark]: RCFGBuilder took 2519.39ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 66.6MB in the beginning and 85.0MB in the end (delta: -18.4MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,305 INFO L158 Benchmark]: TraceAbstraction took 664379.14ms. Allocated memory was 157.3MB in the beginning and 685.8MB in the end (delta: 528.5MB). Free memory was 85.0MB in the beginning and 359.7MB in the end (delta: -274.8MB). Peak memory consumption was 401.9MB. Max. memory is 16.1GB. [2022-11-16 19:37:44,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 829.77ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 47.5MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.90ms. Allocated memory is still 94.4MB. Free memory was 47.5MB in the beginning and 40.3MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 143.14ms. Allocated memory is still 94.4MB. Free memory was 40.3MB in the beginning and 66.6MB in the end (delta: -26.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2519.39ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 66.6MB in the beginning and 85.0MB in the end (delta: -18.4MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * TraceAbstraction took 664379.14ms. Allocated memory was 157.3MB in the beginning and 685.8MB in the end (delta: 528.5MB). Free memory was 85.0MB in the beginning and 359.7MB in the end (delta: -274.8MB). Peak memory consumption was 401.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 19:37:44,532 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-16 19:37:44,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0 --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- 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-e04fb08 [2022-11-16 19:37:47,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:37:47,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:37:47,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:37:47,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:37:47,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:37:47,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:37:47,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:37:47,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:37:47,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:37:47,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:37:47,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:37:47,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:37:47,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:37:47,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:37:47,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:37:47,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:37:47,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:37:47,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:37:47,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:37:47,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:37:47,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:37:47,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:37:47,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:37:47,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:37:47,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:37:47,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:37:47,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:37:47,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:37:47,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:37:47,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:37:47,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:37:47,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:37:47,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:37:47,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:37:47,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:37:47,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:37:47,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:37:47,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:37:47,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:37:47,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:37:47,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 19:37:47,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:37:47,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:37:47,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:37:47,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:37:47,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:37:47,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:37:47,206 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:37:47,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:37:47,207 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:37:47,207 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:37:47,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:37:47,208 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:37:47,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:37:47,210 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:37:47,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:37:47,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:37:47,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:37:47,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:37:47,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:37:47,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:37:47,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 19:37:47,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 19:37:47,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:37:47,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:37:47,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:37:47,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:37:47,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:37:47,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 19:37:47,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:37:47,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:37:47,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:37:47,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:37:47,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:37:47,217 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 19:37:47,217 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 19:37:47,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:37:47,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:37:47,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 19:37:47,218 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2022-11-16 19:37:47,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:37:47,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:37:47,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:37:47,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:37:47,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:37:47,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-11-16 19:37:47,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/ad9e6aa87/a63bc329644f4a8db866d8512cc29a5b/FLAG509fed9d6 [2022-11-16 19:37:48,748 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:37:48,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-11-16 19:37:48,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/ad9e6aa87/a63bc329644f4a8db866d8512cc29a5b/FLAG509fed9d6 [2022-11-16 19:37:48,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/data/ad9e6aa87/a63bc329644f4a8db866d8512cc29a5b [2022-11-16 19:37:48,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:37:48,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:37:48,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:37:48,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:37:48,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:37:48,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:37:48" (1/1) ... [2022-11-16 19:37:48,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e62688b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:48, skipping insertion in model container [2022-11-16 19:37:48,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:37:48" (1/1) ... [2022-11-16 19:37:48,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:37:48,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:37:49,467 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-11-16 19:37:49,639 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-11-16 19:37:49,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:37:49,664 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 19:37:49,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:37:49,706 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-11-16 19:37:49,785 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-11-16 19:37:49,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:37:49,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:37:49,831 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-11-16 19:37:49,909 WARN L229 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_3e762fe7-4496-49c7-a368-c05c5c2540b2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-11-16 19:37:49,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:37:49,975 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:37:49,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49 WrapperNode [2022-11-16 19:37:49,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:37:49,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:37:49,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:37:49,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:37:49,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,135 INFO L138 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-16 19:37:50,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:37:50,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:37:50,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:37:50,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:37:50,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:37:50,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:37:50,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:37:50,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:37:50,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (1/1) ... [2022-11-16 19:37:50,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:37:50,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:37:50,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:37:50,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:37:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 19:37:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 19:37:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:37:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:37:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:37:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:37:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:37:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:37:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:37:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:37:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 19:37:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 19:37:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:37:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:37:50,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:37:50,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:37:58,087 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:37:58,098 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:37:58,098 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-16 19:37:58,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:37:58 BoogieIcfgContainer [2022-11-16 19:37:58,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:37:58,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:37:58,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:37:58,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:37:58,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:37:48" (1/3) ... [2022-11-16 19:37:58,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ef9ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:37:58, skipping insertion in model container [2022-11-16 19:37:58,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:49" (2/3) ... [2022-11-16 19:37:58,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ef9ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:37:58, skipping insertion in model container [2022-11-16 19:37:58,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:37:58" (3/3) ... [2022-11-16 19:37:58,112 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2022-11-16 19:37:58,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:37:58,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:37:58,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:37:58,210 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;@7c21b632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:37:58,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:37:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 187 states have (on average 1.695187165775401) internal successors, (317), 194 states have internal predecessors, (317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:37:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:37:58,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:58,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:58,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:37:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1311467126, now seen corresponding path program 1 times [2022-11-16 19:37:58,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:37:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721518523] [2022-11-16 19:37:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:58,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:37:58,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:37:58,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:37:58,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 19:37:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:37:58,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 19:37:58,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:37:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:37:58,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:37:58,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:37:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721518523] [2022-11-16 19:37:58,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721518523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:37:58,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:37:58,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:37:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463223864] [2022-11-16 19:37:58,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:37:58,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:37:58,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:37:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:37:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:37:58,701 INFO L87 Difference]: Start difference. First operand has 200 states, 187 states have (on average 1.695187165775401) internal successors, (317), 194 states have internal predecessors, (317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:37:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:58,810 INFO L93 Difference]: Finished difference Result 398 states and 669 transitions. [2022-11-16 19:37:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:37:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 19:37:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:58,831 INFO L225 Difference]: With dead ends: 398 [2022-11-16 19:37:58,832 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 19:37:58,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:37:58,845 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:58,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:37:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 19:37:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-16 19:37:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 184 states have (on average 1.326086956521739) internal successors, (244), 190 states have internal predecessors, (244), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:37:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2022-11-16 19:37:58,947 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 9 [2022-11-16 19:37:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:58,948 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2022-11-16 19:37:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:37:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2022-11-16 19:37:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:37:58,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:58,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:58,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:37:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:37:59,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:37:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1760313746, now seen corresponding path program 1 times [2022-11-16 19:37:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:37:59,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773664266] [2022-11-16 19:37:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:37:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:37:59,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:37:59,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 19:37:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:37:59,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:37:59,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:37:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:37:59,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:37:59,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:37:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773664266] [2022-11-16 19:37:59,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773664266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:37:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:37:59,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:37:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948845481] [2022-11-16 19:37:59,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:37:59,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:37:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:37:59,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:37:59,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:37:59,552 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:38:02,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:05,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:06,273 INFO L93 Difference]: Finished difference Result 498 states and 662 transitions. [2022-11-16 19:38:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:06,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 19:38:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:06,279 INFO L225 Difference]: With dead ends: 498 [2022-11-16 19:38:06,280 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 19:38:06,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:06,283 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 140 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:06,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 695 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 19:38:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 19:38:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-11-16 19:38:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 287 states have (on average 1.3275261324041812) internal successors, (381), 293 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:38:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 397 transitions. [2022-11-16 19:38:06,308 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 397 transitions. Word has length 14 [2022-11-16 19:38:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:06,309 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 397 transitions. [2022-11-16 19:38:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:38:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 397 transitions. [2022-11-16 19:38:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:38:06,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:06,312 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, 1] [2022-11-16 19:38:06,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 19:38:06,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:06,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1831692255, now seen corresponding path program 1 times [2022-11-16 19:38:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:06,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545153405] [2022-11-16 19:38:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:06,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:06,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:06,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 19:38:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:06,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:38:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:38:06,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:06,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:06,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545153405] [2022-11-16 19:38:06,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545153405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:06,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:06,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:38:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158113655] [2022-11-16 19:38:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:06,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:06,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:38:06,840 INFO L87 Difference]: Start difference. First operand 299 states and 397 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-16 19:38:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:07,020 INFO L93 Difference]: Finished difference Result 497 states and 670 transitions. [2022-11-16 19:38:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2022-11-16 19:38:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:07,023 INFO L225 Difference]: With dead ends: 497 [2022-11-16 19:38:07,024 INFO L226 Difference]: Without dead ends: 332 [2022-11-16 19:38:07,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:07,026 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 120 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 624 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:38:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-16 19:38:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 305. [2022-11-16 19:38:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 293 states have (on average 1.266211604095563) internal successors, (371), 299 states have internal predecessors, (371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:38:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 387 transitions. [2022-11-16 19:38:07,053 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 387 transitions. Word has length 44 [2022-11-16 19:38:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:07,053 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 387 transitions. [2022-11-16 19:38:07,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-16 19:38:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 387 transitions. [2022-11-16 19:38:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:38:07,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:07,056 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, 1] [2022-11-16 19:38:07,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:07,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:07,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1557793941, now seen corresponding path program 1 times [2022-11-16 19:38:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:07,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698065906] [2022-11-16 19:38:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:07,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:07,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:07,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:07,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 19:38:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:07,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:38:07,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:38:07,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:07,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698065906] [2022-11-16 19:38:07,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698065906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:07,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:07,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:38:07,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543233846] [2022-11-16 19:38:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:38:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:38:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:07,746 INFO L87 Difference]: Start difference. First operand 305 states and 387 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-11-16 19:38:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:07,936 INFO L93 Difference]: Finished difference Result 489 states and 624 transitions. [2022-11-16 19:38:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-11-16 19:38:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:07,939 INFO L225 Difference]: With dead ends: 489 [2022-11-16 19:38:07,940 INFO L226 Difference]: Without dead ends: 318 [2022-11-16 19:38:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:07,942 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 96 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:07,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 846 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:38:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-16 19:38:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 293. [2022-11-16 19:38:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 281 states have (on average 1.2491103202846976) internal successors, (351), 287 states have internal predecessors, (351), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:38:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-16 19:38:07,963 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 44 [2022-11-16 19:38:07,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:07,964 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-16 19:38:07,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-11-16 19:38:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-16 19:38:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:38:07,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:07,966 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, 1] [2022-11-16 19:38:07,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:08,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1299628503, now seen corresponding path program 1 times [2022-11-16 19:38:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:08,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583001000] [2022-11-16 19:38:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:08,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:08,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 19:38:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:08,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:38:08,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:08,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:08,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:08,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:08,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 19:38:08,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:38:08,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-16 19:38:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:38:08,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:08,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:08,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583001000] [2022-11-16 19:38:08,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583001000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:08,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:08,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:38:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205999505] [2022-11-16 19:38:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:08,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:38:08,644 INFO L87 Difference]: Start difference. First operand 293 states and 367 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-16 19:38:12,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:15,890 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2022-11-16 19:38:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2022-11-16 19:38:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:15,894 INFO L225 Difference]: With dead ends: 548 [2022-11-16 19:38:15,894 INFO L226 Difference]: Without dead ends: 388 [2022-11-16 19:38:15,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:15,896 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 144 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:15,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 624 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 19:38:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-16 19:38:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 292. [2022-11-16 19:38:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 280 states have (on average 1.2464285714285714) internal successors, (349), 286 states have internal predecessors, (349), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:38:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2022-11-16 19:38:15,925 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 44 [2022-11-16 19:38:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:15,926 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2022-11-16 19:38:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-16 19:38:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2022-11-16 19:38:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 19:38:15,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:15,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 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] [2022-11-16 19:38:15,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-16 19:38:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:16,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:16,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1888842752, now seen corresponding path program 1 times [2022-11-16 19:38:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:16,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359815815] [2022-11-16 19:38:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:16,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:16,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 19:38:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:16,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:38:16,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 19:38:17,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:17,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359815815] [2022-11-16 19:38:17,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359815815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:17,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:17,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:38:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011615152] [2022-11-16 19:38:17,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:38:17,044 INFO L87 Difference]: Start difference. First operand 292 states and 365 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:17,263 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2022-11-16 19:38:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2022-11-16 19:38:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:17,266 INFO L225 Difference]: With dead ends: 583 [2022-11-16 19:38:17,267 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 19:38:17,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:17,271 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 212 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:17,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 459 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:38:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 19:38:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-11-16 19:38:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 286 states have (on average 1.1853146853146854) internal successors, (339), 292 states have internal predecessors, (339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:38:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 355 transitions. [2022-11-16 19:38:17,338 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 355 transitions. Word has length 81 [2022-11-16 19:38:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:17,338 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 355 transitions. [2022-11-16 19:38:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 355 transitions. [2022-11-16 19:38:17,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 19:38:17,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:17,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 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] [2022-11-16 19:38:17,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:17,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash 822747892, now seen corresponding path program 1 times [2022-11-16 19:38:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:17,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252156478] [2022-11-16 19:38:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:17,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:17,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:17,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 19:38:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:18,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:38:18,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:38:18,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:18,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252156478] [2022-11-16 19:38:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252156478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:18,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:18,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:38:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621956812] [2022-11-16 19:38:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:38:18,702 INFO L87 Difference]: Start difference. First operand 298 states and 355 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:38:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:18,805 INFO L93 Difference]: Finished difference Result 554 states and 667 transitions. [2022-11-16 19:38:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-16 19:38:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:18,809 INFO L225 Difference]: With dead ends: 554 [2022-11-16 19:38:18,809 INFO L226 Difference]: Without dead ends: 301 [2022-11-16 19:38:18,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:18,811 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 2 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:18,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 689 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:38:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-16 19:38:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-16 19:38:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 288 states have (on average 1.1875) internal successors, (342), 295 states have internal predecessors, (342), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:38:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-11-16 19:38:18,837 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 81 [2022-11-16 19:38:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:18,838 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-11-16 19:38:18,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:38:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-11-16 19:38:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 19:38:18,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:18,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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] [2022-11-16 19:38:18,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:19,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:19,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -473646062, now seen corresponding path program 1 times [2022-11-16 19:38:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:19,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759445432] [2022-11-16 19:38:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:19,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 19:38:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:20,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:38:20,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:20,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759445432] [2022-11-16 19:38:20,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759445432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [496081326] [2022-11-16 19:38:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:38:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:38:20,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:38:20,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 19:38:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:21,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:21,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:38:21,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:22,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [496081326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:22,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500291920] [2022-11-16 19:38:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:38:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:38:22,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:38:22,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:38:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:22,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:38:22,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:23,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:23,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:23,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:38:23,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 19:38:23,127 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:38:23,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-16 19:38:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:38:23,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:23,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500291920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:23,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 19:38:23,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2022-11-16 19:38:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083219790] [2022-11-16 19:38:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:38:23,173 INFO L87 Difference]: Start difference. First operand 301 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:26,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:29,982 INFO L93 Difference]: Finished difference Result 403 states and 488 transitions. [2022-11-16 19:38:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:38:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2022-11-16 19:38:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:29,986 INFO L225 Difference]: With dead ends: 403 [2022-11-16 19:38:29,987 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 19:38:29,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:38:29,988 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:29,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-16 19:38:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 19:38:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 303. [2022-11-16 19:38:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 290 states have (on average 1.186206896551724) internal successors, (344), 297 states have internal predecessors, (344), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:38:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-11-16 19:38:30,025 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 83 [2022-11-16 19:38:30,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:30,025 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-11-16 19:38:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-11-16 19:38:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 19:38:30,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:30,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:30,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:30,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:30,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:30,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 19:38:30,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1188083589, now seen corresponding path program 1 times [2022-11-16 19:38:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:30,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958033931] [2022-11-16 19:38:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:30,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:30,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:30,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 19:38:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:31,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:38:31,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:32,095 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958033931] [2022-11-16 19:38:32,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958033931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:32,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2024264629] [2022-11-16 19:38:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:32,096 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:38:32,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:38:32,098 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:38:32,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 19:38:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:33,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:38:33,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:38:33,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:38:33,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2024264629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:33,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:38:33,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-16 19:38:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352592924] [2022-11-16 19:38:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:38:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:38:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:38:33,818 INFO L87 Difference]: Start difference. First operand 303 states and 361 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:36,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:39,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:40,879 INFO L93 Difference]: Finished difference Result 668 states and 816 transitions. [2022-11-16 19:38:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:38:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2022-11-16 19:38:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:40,884 INFO L225 Difference]: With dead ends: 668 [2022-11-16 19:38:40,884 INFO L226 Difference]: Without dead ends: 410 [2022-11-16 19:38:40,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:38:40,886 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 412 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:40,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 447 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-16 19:38:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-16 19:38:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 378. [2022-11-16 19:38:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.189041095890411) internal successors, (434), 372 states have internal predecessors, (434), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:38:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 451 transitions. [2022-11-16 19:38:40,930 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 451 transitions. Word has length 113 [2022-11-16 19:38:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:40,931 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 451 transitions. [2022-11-16 19:38:40,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:38:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 451 transitions. [2022-11-16 19:38:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 19:38:40,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:40,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:40,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:41,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:41,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:41,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:41,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2079236494, now seen corresponding path program 1 times [2022-11-16 19:38:41,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:41,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732119138] [2022-11-16 19:38:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:41,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:41,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:41,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 19:38:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:42,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:42,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:38:42,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:42,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732119138] [2022-11-16 19:38:42,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732119138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1973768380] [2022-11-16 19:38:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:38:42,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:38:42,721 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:38:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-16 19:38:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:44,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:44,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:38:44,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:44,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1973768380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:44,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564612081] [2022-11-16 19:38:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:44,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:38:44,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:38:44,765 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:38:44,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 19:38:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:45,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:38:45,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:45,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:38:46,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564612081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:46,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:38:46,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-16 19:38:46,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185886631] [2022-11-16 19:38:46,160 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:38:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:38:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:38:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:38:46,163 INFO L87 Difference]: Start difference. First operand 378 states and 451 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 19:38:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:46,787 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2022-11-16 19:38:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 19:38:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2022-11-16 19:38:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:46,791 INFO L225 Difference]: With dead ends: 723 [2022-11-16 19:38:46,792 INFO L226 Difference]: Without dead ends: 393 [2022-11-16 19:38:46,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-16 19:38:46,794 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 63 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:46,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1361 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:38:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-16 19:38:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2022-11-16 19:38:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 375 states have (on average 1.2053333333333334) internal successors, (452), 382 states have internal predecessors, (452), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:38:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 469 transitions. [2022-11-16 19:38:46,847 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 469 transitions. Word has length 120 [2022-11-16 19:38:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:46,848 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 469 transitions. [2022-11-16 19:38:46,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 19:38:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 469 transitions. [2022-11-16 19:38:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 19:38:46,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:46,850 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:46,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:47,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:47,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:47,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:38:47,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash -180525716, now seen corresponding path program 2 times [2022-11-16 19:38:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:47,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680395862] [2022-11-16 19:38:47,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:38:47,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:47,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:47,488 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:47,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 19:38:48,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:38:48,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:38:48,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:38:48,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:38:49,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:38:49,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:38:49,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680395862] [2022-11-16 19:38:49,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680395862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:49,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [24618288] [2022-11-16 19:38:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:38:49,417 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:38:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:38:49,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:38:49,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-16 19:38:51,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:38:51,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:38:52,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:38:52,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:38:52,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:38:52,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [24618288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:52,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338707694] [2022-11-16 19:38:52,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:38:52,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:38:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:38:52,223 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:38:52,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 19:38:53,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:38:53,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:38:53,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:38:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:38:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:38:53,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:38:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:38:54,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338707694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:38:54,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:38:54,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-16 19:38:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715435486] [2022-11-16 19:38:54,213 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:38:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:38:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:38:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:38:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-16 19:38:54,216 INFO L87 Difference]: Start difference. First operand 389 states and 469 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:38:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:55,918 INFO L93 Difference]: Finished difference Result 741 states and 900 transitions. [2022-11-16 19:38:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:38:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2022-11-16 19:38:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:55,922 INFO L225 Difference]: With dead ends: 741 [2022-11-16 19:38:55,922 INFO L226 Difference]: Without dead ends: 402 [2022-11-16 19:38:55,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 19:38:55,925 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:55,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2075 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 19:38:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-16 19:38:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 396. [2022-11-16 19:38:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 382 states have (on average 1.2015706806282722) internal successors, (459), 389 states have internal predecessors, (459), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 19:38:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 476 transitions. [2022-11-16 19:38:55,968 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 476 transitions. Word has length 126 [2022-11-16 19:38:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:55,969 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 476 transitions. [2022-11-16 19:38:55,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:38:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 476 transitions. [2022-11-16 19:38:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 19:38:55,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:55,976 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:56,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:56,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:56,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 19:38:56,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:38:56,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:38:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash -493627384, now seen corresponding path program 3 times [2022-11-16 19:38:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:38:56,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514839380] [2022-11-16 19:38:56,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:38:56,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:38:56,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:38:56,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:38:56,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 19:39:02,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:39:02,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:39:02,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:39:02,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 19:39:03,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:39:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 19:39:03,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514839380] [2022-11-16 19:39:03,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514839380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:39:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900549976] [2022-11-16 19:39:03,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:39:03,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:39:03,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:39:03,718 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:39:03,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e762fe7-4496-49c7-a368-c05c5c2540b2/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process