./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- 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 19:45:07,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:45:07,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:45:07,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:45:07,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:45:07,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:45:07,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:45:07,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:45:07,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:45:07,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:45:07,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:45:07,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:45:07,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:45:07,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:45:07,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:45:07,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:45:07,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:45:07,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:45:07,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:45:07,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:45:07,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:45:07,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:45:07,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:45:07,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:45:07,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:45:07,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:45:07,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:45:07,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:45:07,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:45:07,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:45:07,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:45:07,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:45:07,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:45:07,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:45:07,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:45:07,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:45:07,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:45:07,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:45:07,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:45:07,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:45:07,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:45:07,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:45:07,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:45:07,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:45:07,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:45:07,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:45:07,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:45:07,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:45:07,651 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:45:07,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:45:07,652 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:45:07,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:45:07,653 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:45:07,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:45:07,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:45:07,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:45:07,654 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:45:07,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:45:07,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:45:07,655 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:45:07,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:45:07,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:45:07,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:45:07,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:45:07,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:45:07,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:45:07,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:45:07,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:45:07,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:45:07,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:45:07,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:45:07,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:45:07,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:45:07,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:45:07,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:45:07,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:45:07,660 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:45:07,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:45:07,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:45:07,661 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:45:07,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:45:07,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:45:07,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:45:07,662 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2022-11-16 19:45:08,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:45:08,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:45:08,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:45:08,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:45:08,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:45:08,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-16 19:45:08,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/98e867ab7/60d9a8cdb05b4a98ae382afb5253f567/FLAGd0d5444a3 [2022-11-16 19:45:08,808 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:45:08,808 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-16 19:45:08,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/98e867ab7/60d9a8cdb05b4a98ae382afb5253f567/FLAGd0d5444a3 [2022-11-16 19:45:09,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/98e867ab7/60d9a8cdb05b4a98ae382afb5253f567 [2022-11-16 19:45:09,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:45:09,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:45:09,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:45:09,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:45:09,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:45:09,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:09,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544a1bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09, skipping insertion in model container [2022-11-16 19:45:09,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:09,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:45:09,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:45:09,578 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-16 19:45:09,758 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-16 19:45:09,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:45:09,780 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:45:09,827 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-16 19:45:09,932 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-16 19:45:09,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:45:09,984 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:45:09,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09 WrapperNode [2022-11-16 19:45:09,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:45:09,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:45:09,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:45:09,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:45:09,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,151 INFO L138 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-16 19:45:10,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:45:10,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:45:10,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:45:10,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:45:10,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:45:10,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:45:10,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:45:10,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:45:10,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (1/1) ... [2022-11-16 19:45:10,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:45:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:10,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:45:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:45:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:45:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:45:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:45:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:45:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:45:10,421 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:45:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:45:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:45:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:45:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:45:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:45:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:45:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:45:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:45:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:45:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:45:10,715 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:45:10,717 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:45:12,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:45:12,676 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:45:12,676 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-16 19:45:12,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:45:12 BoogieIcfgContainer [2022-11-16 19:45:12,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:45:12,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:45:12,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:45:12,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:45:12,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:45:09" (1/3) ... [2022-11-16 19:45:12,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a1e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:45:12, skipping insertion in model container [2022-11-16 19:45:12,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:09" (2/3) ... [2022-11-16 19:45:12,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a1e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:45:12, skipping insertion in model container [2022-11-16 19:45:12,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:45:12" (3/3) ... [2022-11-16 19:45:12,689 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2022-11-16 19:45:12,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:45:12,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:45:12,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:45:12,766 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;@6282430f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:45:12,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:45:12,772 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 19:45:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:45:12,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:12,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:12,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1898435451, now seen corresponding path program 1 times [2022-11-16 19:45:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:12,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471159256] [2022-11-16 19:45:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:12,952 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 19:45:12,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471159256] [2022-11-16 19:45:12,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471159256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:12,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:12,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:45:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342471326] [2022-11-16 19:45:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:12,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:45:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:45:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:45:13,014 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 19:45:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:13,513 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2022-11-16 19:45:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:45:13,520 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 19:45:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:13,530 INFO L225 Difference]: With dead ends: 245 [2022-11-16 19:45:13,530 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 19:45:13,533 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 19:45:13,536 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:13,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:45:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 19:45:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-16 19:45:13,577 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 19:45:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-11-16 19:45:13,587 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2022-11-16 19:45:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:13,587 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-11-16 19:45:13,587 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 19:45:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-11-16 19:45:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:45:13,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:13,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:13,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:45:13,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash -94655351, now seen corresponding path program 1 times [2022-11-16 19:45:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:13,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833906013] [2022-11-16 19:45:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:13,867 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 19:45:13,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833906013] [2022-11-16 19:45:13,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833906013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:13,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:13,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310889985] [2022-11-16 19:45:13,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:13,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:13,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:13,872 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 19:45:16,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 19:45:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:16,890 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2022-11-16 19:45:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:16,900 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 19:45:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:16,902 INFO L225 Difference]: With dead ends: 258 [2022-11-16 19:45:16,902 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 19:45:16,903 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 19:45:16,904 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:16,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 355 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 19:45:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 19:45:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2022-11-16 19:45:16,924 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 19:45:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2022-11-16 19:45:16,926 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2022-11-16 19:45:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2022-11-16 19:45:16,927 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 19:45:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2022-11-16 19:45:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 19:45:16,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:16,929 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 19:45:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:45:16,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash 339208180, now seen corresponding path program 1 times [2022-11-16 19:45:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:16,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585529565] [2022-11-16 19:45:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:17,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:45:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140004525] [2022-11-16 19:45:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:17,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:17,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:17,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:45:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:17,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:45:17,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:18,092 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 19:45:18,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:18,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:18,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585529565] [2022-11-16 19:45:18,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:45:18,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140004525] [2022-11-16 19:45:18,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140004525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:18,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:18,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:45:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887301566] [2022-11-16 19:45:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:18,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:18,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:18,095 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 19:45:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:19,520 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2022-11-16 19:45:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:45:19,526 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 19:45:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:19,528 INFO L225 Difference]: With dead ends: 304 [2022-11-16 19:45:19,528 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 19:45:19,529 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 19:45:19,530 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:19,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 19:45:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 19:45:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2022-11-16 19:45:19,546 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 19:45:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2022-11-16 19:45:19,548 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2022-11-16 19:45:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:19,548 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2022-11-16 19:45:19,549 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 19:45:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2022-11-16 19:45:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 19:45:19,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:19,551 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 19:45:19,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:19,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1571641394, now seen corresponding path program 1 times [2022-11-16 19:45:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:19,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915025605] [2022-11-16 19:45:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:19,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:19,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:45:19,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615716472] [2022-11-16 19:45:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:19,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:19,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:19,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:19,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:45:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:20,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:45:20,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:20,508 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 19:45:20,534 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 19:45:20,544 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 19:45:20,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:20,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:20,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915025605] [2022-11-16 19:45:20,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:45:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615716472] [2022-11-16 19:45:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615716472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:20,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:20,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740624574] [2022-11-16 19:45:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:20,549 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 19:45:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:22,564 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2022-11-16 19:45:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:22,567 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 19:45:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:22,571 INFO L225 Difference]: With dead ends: 231 [2022-11-16 19:45:22,571 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 19:45:22,572 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 19:45:22,572 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:22,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 354 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 19:45:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 19:45:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2022-11-16 19:45:22,593 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 19:45:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2022-11-16 19:45:22,595 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2022-11-16 19:45:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:22,595 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2022-11-16 19:45:22,596 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 19:45:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2022-11-16 19:45:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 19:45:22,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:22,598 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 19:45:22,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 19:45:22,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2144578966, now seen corresponding path program 1 times [2022-11-16 19:45:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:22,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268292639] [2022-11-16 19:45:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:22,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:45:22,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513402602] [2022-11-16 19:45:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:22,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:22,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:22,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:45:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:23,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:45:23,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:23,636 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 19:45:23,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:23,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:23,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268292639] [2022-11-16 19:45:23,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:45:23,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513402602] [2022-11-16 19:45:23,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513402602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:23,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:23,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:23,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117902395] [2022-11-16 19:45:23,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:23,639 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 19:45:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:24,763 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2022-11-16 19:45:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:45:24,764 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 19:45:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:24,766 INFO L225 Difference]: With dead ends: 395 [2022-11-16 19:45:24,767 INFO L226 Difference]: Without dead ends: 242 [2022-11-16 19:45:24,772 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 19:45:24,773 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 260 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:24,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 290 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 19:45:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-16 19:45:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2022-11-16 19:45:24,791 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 19:45:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2022-11-16 19:45:24,793 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2022-11-16 19:45:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:24,794 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2022-11-16 19:45:24,794 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 19:45:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2022-11-16 19:45:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 19:45:24,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:24,797 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 19:45:24,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:25,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2121750984, now seen corresponding path program 1 times [2022-11-16 19:45:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756169137] [2022-11-16 19:45:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:25,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:45:25,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915385522] [2022-11-16 19:45:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:25,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:25,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:45:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:40,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:45:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:40,778 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 19:45:40,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:40,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:40,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756169137] [2022-11-16 19:45:40,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:45:40,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915385522] [2022-11-16 19:45:40,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915385522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:40,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:40,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:40,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794179813] [2022-11-16 19:45:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:40,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:40,786 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 19:45:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:41,984 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2022-11-16 19:45:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:41,989 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 19:45:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:41,990 INFO L225 Difference]: With dead ends: 411 [2022-11-16 19:45:41,990 INFO L226 Difference]: Without dead ends: 216 [2022-11-16 19:45:41,991 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 19:45:41,992 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:41,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 19:45:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-16 19:45:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-16 19:45:42,007 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 19:45:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2022-11-16 19:45:42,009 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2022-11-16 19:45:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:42,009 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2022-11-16 19:45:42,010 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 19:45:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2022-11-16 19:45:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 19:45:42,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:42,012 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 19:45:42,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:42,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:42,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -869473738, now seen corresponding path program 1 times [2022-11-16 19:45:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:42,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954820252] [2022-11-16 19:45:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:42,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:45:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233109997] [2022-11-16 19:45:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:42,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:42,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:42,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:46:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:27,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:46:27,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:46:27,429 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 19:46:27,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:46:27,532 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 19:46:27,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954820252] [2022-11-16 19:46:27,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:46:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233109997] [2022-11-16 19:46:27,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233109997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:46:27,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1241789321] [2022-11-16 19:46:27,555 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-16 19:46:27,555 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:46:27,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:46:27,565 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:46:27,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:46:27,663 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 19:46:27,668 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 19:46:27,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,687 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:46:27,688 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 19:46:27,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,699 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 19:46:27,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:46:27,727 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 19:46:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,785 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:46:27,786 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 19:46:27,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,836 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 19:46:27,836 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 19:46:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,863 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 19:46:27,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,917 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:46:27,917 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 19:46:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:27,941 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 19:46:28,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,417 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 19:46:28,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,490 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 19:46:28,534 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 19:46:28,559 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 19:46:28,600 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 19:46:28,615 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 19:46:28,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,682 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 19:46:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,786 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 19:46:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,890 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 19:46:28,936 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 19:46:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,007 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-16 19:46:29,008 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 19:46:29,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,106 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 19:46:29,107 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 19:46:29,145 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 19:46:29,402 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 19:46:29,407 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 19:46:29,413 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 19:46:29,476 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:46:29,477 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 19:46:29,513 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-16 19:46:29,513 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 19:46:29,544 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 19:46:29,545 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 19:46:29,592 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 19:46:29,598 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 19:46:29,605 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 19:46:29,674 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 19:46:29,709 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 19:46:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:29,766 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 19:46:29,972 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 19:46:30,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:46:30,025 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 19:46:30,060 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 19:46:31,108 INFO L217 Elim1Store]: Index analysis took 631 ms [2022-11-16 19:46:36,327 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:46:36,328 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-16 19:46:36,329 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 19:46:37,517 INFO L217 Elim1Store]: Index analysis took 969 ms [2022-11-16 19:46:38,103 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-16 19:46:38,104 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 19:46:48,895 WARN L233 SmtUtils]: Spent 10.66s 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 19:46:48,896 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-16 19:46:48,896 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 19:46:49,333 INFO L217 Elim1Store]: Index analysis took 185 ms [2022-11-16 19:47:19,229 WARN L233 SmtUtils]: Spent 29.89s 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 19:47:19,230 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-16 19:47:19,231 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 19:47:21,356 INFO L217 Elim1Store]: Index analysis took 1457 ms [2022-11-16 19:47:54,325 WARN L233 SmtUtils]: Spent 31.72s 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 19:47:54,326 INFO L321 Elim1Store]: treesize reduction 13218, result has 27.3 percent of original size [2022-11-16 19:47:54,327 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 19:47:56,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:47:56,109 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 19:47:56,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:47:56,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:47:56,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:47:56,274 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 19:47:57,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:47:57,677 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 19:47:57,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:47:57,785 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 19:47:58,683 INFO L217 Elim1Store]: Index analysis took 110 ms [2022-11-16 19:48:01,873 INFO L321 Elim1Store]: treesize reduction 550, result has 14.1 percent of original size [2022-11-16 19:48:01,874 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 19:48:10,497 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:48:11,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:48:11,313 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 19:48:12,350 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:48:20,812 WARN L233 SmtUtils]: Spent 6.29s 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 19:48:20,813 INFO L321 Elim1Store]: treesize reduction 185, result has 49.9 percent of original size [2022-11-16 19:48:20,814 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 19:48:21,954 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 19:48:24,378 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-11-16 19:48:24,380 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 19:48:25,396 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 19:48:28,287 INFO L321 Elim1Store]: treesize reduction 45, result has 49.4 percent of original size [2022-11-16 19:48:28,289 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 19:49:02,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:02,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:02,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:02,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:03,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,762 INFO L217 Elim1Store]: Index analysis took 6822 ms [2022-11-16 19:49:05,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:05,775 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 19:49:05,967 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 23 treesize of output 15 [2022-11-16 19:49:07,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:11,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,531 INFO L217 Elim1Store]: Index analysis took 6825 ms [2022-11-16 19:49:13,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:13,545 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 19:49:14,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:14,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:18,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,111 INFO L217 Elim1Store]: Index analysis took 5259 ms [2022-11-16 19:49:19,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:19,123 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 19:49:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:19,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:19,575 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-11-16 19:49:19,576 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 19:49:20,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:21,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:22,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:22,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:23,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,868 INFO L217 Elim1Store]: Index analysis took 3839 ms [2022-11-16 19:49:23,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:23,878 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 19:49:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:24,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:24,233 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 19:49:24,566 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:49:26,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,643 INFO L217 Elim1Store]: Index analysis took 1995 ms [2022-11-16 19:49:26,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:26,663 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 19:49:32,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:36,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,654 INFO L217 Elim1Store]: Index analysis took 7488 ms [2022-11-16 19:49:38,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:38,664 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 19:49:39,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:39,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:39,166 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 19:49:39,346 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:49:44,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:44,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:44,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:45,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,450 INFO L217 Elim1Store]: Index analysis took 6919 ms [2022-11-16 19:49:46,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:46,462 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 19:49:46,808 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:49:48,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:52,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,809 INFO L217 Elim1Store]: Index analysis took 6698 ms [2022-11-16 19:49:53,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:53,821 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 19:49:54,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:54,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:49:54,319 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 19:49:55,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,990 INFO L217 Elim1Store]: Index analysis took 1517 ms [2022-11-16 19:49:55,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:55,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:56,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:49:56,005 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 19:50:10,599 INFO L217 Elim1Store]: Index analysis took 9571 ms [2022-11-16 19:50:11,969 INFO L321 Elim1Store]: treesize reduction 538, result has 3.8 percent of original size [2022-11-16 19:50:11,969 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 19:50:12,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:12,445 INFO L217 Elim1Store]: Index analysis took 279 ms [2022-11-16 19:50:12,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:50:12,944 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 19:50:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:13,302 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 19:50:18,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:21,341 INFO L217 Elim1Store]: Index analysis took 7795 ms [2022-11-16 19:50:22,365 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 19:50:22,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:23,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:24,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,955 INFO L217 Elim1Store]: Index analysis took 10181 ms [2022-11-16 19:50:32,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:32,971 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 19:50:33,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:33,478 INFO L217 Elim1Store]: Index analysis took 265 ms [2022-11-16 19:50:34,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:50:34,020 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 19:50:34,480 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:50:35,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:37,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:40,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:48,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,242 INFO L217 Elim1Store]: Index analysis took 16036 ms [2022-11-16 19:50:51,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:51,255 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 19:50:52,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:52,237 INFO L217 Elim1Store]: Index analysis took 403 ms [2022-11-16 19:50:53,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:50:53,049 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 19:50:53,480 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:50:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:55,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:57,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:57,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:57,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:50:57,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,181 INFO L217 Elim1Store]: Index analysis took 4438 ms [2022-11-16 19:50:58,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:50:58,191 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 19:50:58,352 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 19:50:58,794 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:52:22,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:52:25,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:52:25,743 INFO L217 Elim1Store]: Index analysis took 2882 ms [2022-11-16 19:52:25,904 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 19:52:27,552 INFO L217 Elim1Store]: Index analysis took 531 ms [2022-11-16 19:54:18,740 WARN L233 SmtUtils]: Spent 1.85m 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 19:54:18,743 INFO L321 Elim1Store]: treesize reduction 1365, result has 5.7 percent of original size [2022-11-16 19:54:18,749 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 19:56:28,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:28,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:28,570 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 19:56:28,574 INFO L158 Benchmark]: Toolchain (without parser) took 679528.60ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 108.0MB in the beginning and 343.3MB in the end (delta: -235.3MB). Peak memory consumption was 410.2MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,574 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 46.1MB in the beginning and 46.1MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:56:28,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 937.65ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.28ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 88.2MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,575 INFO L158 Benchmark]: Boogie Preprocessor took 163.22ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 80.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,575 INFO L158 Benchmark]: RCFGBuilder took 2361.22ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 80.6MB in the beginning and 97.1MB in the end (delta: -16.5MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,575 INFO L158 Benchmark]: TraceAbstraction took 675891.74ms. Allocated memory was 186.6MB in the beginning and 629.1MB in the end (delta: 442.5MB). Free memory was 96.0MB in the beginning and 343.3MB in the end (delta: -247.3MB). Peak memory consumption was 354.4MB. Max. memory is 16.1GB. [2022-11-16 19:56:28,576 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 92.3MB. Free memory was 46.1MB in the beginning and 46.1MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 937.65ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 168.28ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 88.2MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.22ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 80.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2361.22ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 80.6MB in the beginning and 97.1MB in the end (delta: -16.5MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * TraceAbstraction took 675891.74ms. Allocated memory was 186.6MB in the beginning and 629.1MB in the end (delta: 442.5MB). Free memory was 96.0MB in the beginning and 343.3MB in the end (delta: -247.3MB). Peak memory consumption was 354.4MB. 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 19:56:28,798 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-16 19:56:28,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- 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 19:56:30,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:56:30,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:56:31,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:56:31,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:56:31,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:56:31,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:56:31,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:56:31,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:56:31,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:56:31,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:56:31,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:56:31,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:56:31,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:56:31,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:56:31,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:56:31,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:56:31,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:56:31,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:56:31,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:56:31,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:56:31,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:56:31,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:56:31,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:56:31,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:56:31,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:56:31,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:56:31,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:56:31,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:56:31,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:56:31,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:56:31,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:56:31,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:56:31,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:56:31,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:56:31,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:56:31,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:56:31,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:56:31,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:56:31,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:56:31,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:56:31,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 19:56:31,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:56:31,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:56:31,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:56:31,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:56:31,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:56:31,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:56:31,081 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:56:31,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:56:31,082 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:56:31,082 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:56:31,082 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:56:31,083 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:56:31,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:56:31,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:56:31,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:56:31,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:56:31,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:56:31,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:56:31,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:56:31,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:56:31,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 19:56:31,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 19:56:31,087 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:56:31,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:56:31,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:56:31,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:56:31,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:56:31,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 19:56:31,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:56:31,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:56:31,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:56:31,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:56:31,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:56:31,090 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 19:56:31,090 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:31,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:56:31,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:56:31,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 19:56:31,091 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2022-11-16 19:56:31,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:56:31,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:56:31,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:56:31,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:56:31,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:56:31,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-16 19:56:31,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/7ccec6278/5ffc155b76834e38a21abaffa284d549/FLAG3ec356906 [2022-11-16 19:56:32,260 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:56:32,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-16 19:56:32,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/7ccec6278/5ffc155b76834e38a21abaffa284d549/FLAG3ec356906 [2022-11-16 19:56:32,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/data/7ccec6278/5ffc155b76834e38a21abaffa284d549 [2022-11-16 19:56:32,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:56:32,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:56:32,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:56:32,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:56:32,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:56:32,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:56:32" (1/1) ... [2022-11-16 19:56:32,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e71e7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:32, skipping insertion in model container [2022-11-16 19:56:32,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:56:32" (1/1) ... [2022-11-16 19:56:32,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:56:32,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:56:32,961 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-16 19:56:33,088 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-16 19:56:33,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:56:33,109 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 19:56:33,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:56:33,148 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-16 19:56:33,205 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-16 19:56:33,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:56:33,242 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:56:33,275 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-16 19:56:33,370 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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-16 19:56:33,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:56:33,433 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:56:33,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33 WrapperNode [2022-11-16 19:56:33,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:56:33,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:56:33,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:56:33,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:56:33,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,574 INFO L138 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-16 19:56:33,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:56:33,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:56:33,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:56:33,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:56:33,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:56:33,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:56:33,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:56:33,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:56:33,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (1/1) ... [2022-11-16 19:56:33,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:56:33,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:33,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:56:33,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:56:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 19:56:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 19:56:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:56:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:56:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:56:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:56:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:56:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:56:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:56:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:56:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:56:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:56:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:56:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 19:56:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 19:56:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:56:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:56:34,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:56:34,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:56:41,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:56:41,900 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:56:41,909 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-16 19:56:41,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:56:41 BoogieIcfgContainer [2022-11-16 19:56:41,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:56:41,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:56:41,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:56:41,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:56:41,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:56:32" (1/3) ... [2022-11-16 19:56:41,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f129136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:56:41, skipping insertion in model container [2022-11-16 19:56:41,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:33" (2/3) ... [2022-11-16 19:56:41,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f129136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:56:41, skipping insertion in model container [2022-11-16 19:56:41,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:56:41" (3/3) ... [2022-11-16 19:56:41,925 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2022-11-16 19:56:41,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:56:41,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:56:42,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:56:42,036 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;@3fb3cc05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:56:42,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:56:42,042 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 19:56:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:56:42,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:42,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:56:42,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1311467126, now seen corresponding path program 1 times [2022-11-16 19:56:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:42,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078264927] [2022-11-16 19:56:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:42,089 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 19:56:42,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:42,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:42,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 19:56:42,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:42,362 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 19:56:42,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:42,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078264927] [2022-11-16 19:56:42,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078264927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:42,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:42,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:56:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122833237] [2022-11-16 19:56:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:42,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:56:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:56:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:56:42,422 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 19:56:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:42,484 INFO L93 Difference]: Finished difference Result 398 states and 669 transitions. [2022-11-16 19:56:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:56:42,490 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 19:56:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:42,505 INFO L225 Difference]: With dead ends: 398 [2022-11-16 19:56:42,506 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 19:56:42,510 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 19:56:42,513 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 19:56:42,515 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 19:56:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 19:56:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-16 19:56:42,597 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 19:56:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2022-11-16 19:56:42,606 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 9 [2022-11-16 19:56:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:42,608 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2022-11-16 19:56:42,608 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 19:56:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2022-11-16 19:56:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:56:42,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:42,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:56:42,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:42,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1760313746, now seen corresponding path program 1 times [2022-11-16 19:56:42,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:42,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099161019] [2022-11-16 19:56:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:42,826 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 19:56:42,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:42,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:42,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:43,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:56:43,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:43,137 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 19:56:43,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:43,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:43,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099161019] [2022-11-16 19:56:43,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099161019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:43,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:43,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:56:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461066982] [2022-11-16 19:56:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:56:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:56:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:56:43,142 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 19:56:45,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:56:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:48,020 INFO L93 Difference]: Finished difference Result 498 states and 662 transitions. [2022-11-16 19:56:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:48,024 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 19:56:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:48,026 INFO L225 Difference]: With dead ends: 498 [2022-11-16 19:56:48,027 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 19:56:48,030 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 19:56:48,031 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 140 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:48,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 695 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 19:56:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 19:56:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-11-16 19:56:48,054 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 19:56:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 397 transitions. [2022-11-16 19:56:48,056 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 397 transitions. Word has length 14 [2022-11-16 19:56:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:48,057 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 397 transitions. [2022-11-16 19:56:48,057 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 19:56:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 397 transitions. [2022-11-16 19:56:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:56:48,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:48,059 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 19:56:48,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1831692255, now seen corresponding path program 1 times [2022-11-16 19:56:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:48,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69081390] [2022-11-16 19:56:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:48,281 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 19:56:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:48,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:56:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:48,529 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 19:56:48,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:48,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:48,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69081390] [2022-11-16 19:56:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69081390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:56:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037356898] [2022-11-16 19:56:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:48,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:56:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:56:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:56:48,533 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 19:56:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:48,703 INFO L93 Difference]: Finished difference Result 497 states and 670 transitions. [2022-11-16 19:56:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:48,703 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 19:56:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:48,705 INFO L225 Difference]: With dead ends: 497 [2022-11-16 19:56:48,706 INFO L226 Difference]: Without dead ends: 332 [2022-11-16 19:56:48,707 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 19:56:48,708 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 19:56:48,709 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 19:56:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-16 19:56:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 305. [2022-11-16 19:56:48,729 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 19:56:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 387 transitions. [2022-11-16 19:56:48,731 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 387 transitions. Word has length 44 [2022-11-16 19:56:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:48,731 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 387 transitions. [2022-11-16 19:56:48,732 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 19:56:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 387 transitions. [2022-11-16 19:56:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:56:48,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:48,734 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 19:56:48,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1557793941, now seen corresponding path program 1 times [2022-11-16 19:56:48,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382735103] [2022-11-16 19:56:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:48,950 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 19:56:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:48,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:48,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:49,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:56:49,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:49,345 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 19:56:49,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:49,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:49,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382735103] [2022-11-16 19:56:49,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382735103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:49,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:49,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:56:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478611233] [2022-11-16 19:56:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:49,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:56:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:56:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:56:49,348 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 19:56:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:49,515 INFO L93 Difference]: Finished difference Result 489 states and 624 transitions. [2022-11-16 19:56:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:49,516 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 19:56:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:49,518 INFO L225 Difference]: With dead ends: 489 [2022-11-16 19:56:49,518 INFO L226 Difference]: Without dead ends: 318 [2022-11-16 19:56:49,519 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 19:56:49,522 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:49,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 846 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:56:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-16 19:56:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 293. [2022-11-16 19:56:49,565 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 19:56:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-16 19:56:49,566 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 44 [2022-11-16 19:56:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:49,567 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-16 19:56:49,567 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 19:56:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-16 19:56:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 19:56:49,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:49,569 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 19:56:49,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:49,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:49,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1299628503, now seen corresponding path program 1 times [2022-11-16 19:56:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723043449] [2022-11-16 19:56:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:49,784 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 19:56:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:49,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:49,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:50,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:56:50,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:50,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:56:50,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:56:50,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:56:50,086 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 19:56:50,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:56:50,163 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 19:56:50,195 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 19:56:50,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:50,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:50,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723043449] [2022-11-16 19:56:50,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723043449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:50,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:50,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:56:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924979366] [2022-11-16 19:56:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:56:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:56:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:56:50,197 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 19:56:54,162 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 19:56:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:57,603 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2022-11-16 19:56:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:57,604 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 19:56:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:57,606 INFO L225 Difference]: With dead ends: 548 [2022-11-16 19:56:57,606 INFO L226 Difference]: Without dead ends: 388 [2022-11-16 19:56:57,606 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 19:56:57,607 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 144 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:57,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 624 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 19:56:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-16 19:56:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 292. [2022-11-16 19:56:57,629 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 19:56:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2022-11-16 19:56:57,630 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 44 [2022-11-16 19:56:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:57,631 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2022-11-16 19:56:57,631 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 19:56:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2022-11-16 19:56:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 19:56:57,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:57,634 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 19:56:57,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:57,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:57,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1888842752, now seen corresponding path program 1 times [2022-11-16 19:56:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871101172] [2022-11-16 19:56:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:57,851 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 19:56:57,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:57,852 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:57,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:58,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:56:58,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:58,584 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 19:56:58,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:58,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:58,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871101172] [2022-11-16 19:56:58,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871101172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:58,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:58,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:56:58,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960611774] [2022-11-16 19:56:58,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:58,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:56:58,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:56:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:56:58,587 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 19:56:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:58,748 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2022-11-16 19:56:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:58,749 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 19:56:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:58,750 INFO L225 Difference]: With dead ends: 583 [2022-11-16 19:56:58,751 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 19:56:58,751 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 19:56:58,752 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 459 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:56:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 19:56:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-11-16 19:56:58,782 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 19:56:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 355 transitions. [2022-11-16 19:56:58,783 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 355 transitions. Word has length 81 [2022-11-16 19:56:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:58,784 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 355 transitions. [2022-11-16 19:56:58,784 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 19:56:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 355 transitions. [2022-11-16 19:56:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 19:56:58,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:58,786 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 19:56:58,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:59,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:59,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:56:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 822747892, now seen corresponding path program 1 times [2022-11-16 19:56:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49000975] [2022-11-16 19:56:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:59,010 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 19:56:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:59,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:59,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:56:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:56:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:59,809 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 19:56:59,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:59,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49000975] [2022-11-16 19:56:59,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49000975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:59,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:59,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:56:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831797889] [2022-11-16 19:56:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:56:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:56:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:56:59,813 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 19:56:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:59,887 INFO L93 Difference]: Finished difference Result 554 states and 667 transitions. [2022-11-16 19:56:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:56:59,888 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 19:56:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:59,890 INFO L225 Difference]: With dead ends: 554 [2022-11-16 19:56:59,890 INFO L226 Difference]: Without dead ends: 301 [2022-11-16 19:56:59,891 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 19:56:59,891 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 19:56:59,892 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 19:56:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-16 19:56:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-16 19:56:59,910 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 19:56:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-11-16 19:56:59,911 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 81 [2022-11-16 19:56:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:59,912 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-11-16 19:56:59,912 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 19:56:59,912 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-11-16 19:56:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 19:56:59,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:59,914 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 19:56:59,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:00,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash -473646062, now seen corresponding path program 1 times [2022-11-16 19:57:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:00,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984961463] [2022-11-16 19:57:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:00,132 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 19:57:00,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:00,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:00,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:00,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:00,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:00,908 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 19:57:00,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:01,071 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 19:57:01,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:01,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984961463] [2022-11-16 19:57:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984961463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185987435] [2022-11-16 19:57:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:01,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:01,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:01,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:01,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 19:57:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:02,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:02,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:02,393 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 19:57:02,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:02,472 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 19:57:02,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1185987435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:02,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597994031] [2022-11-16 19:57:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:02,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:02,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:57:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:03,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:57:03,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:03,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:57:03,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:57:03,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:57:03,298 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 19:57:03,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:57:03,394 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 19:57:03,427 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 19:57:03,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597994031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:03,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 19:57:03,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2022-11-16 19:57:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970515628] [2022-11-16 19:57:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:57:03,429 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 19:57:06,673 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 19:57:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:09,996 INFO L93 Difference]: Finished difference Result 403 states and 488 transitions. [2022-11-16 19:57:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:57:09,998 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 19:57:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:10,000 INFO L225 Difference]: With dead ends: 403 [2022-11-16 19:57:10,000 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 19:57:10,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 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 19:57:10,001 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:10,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-16 19:57:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 19:57:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 303. [2022-11-16 19:57:10,027 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 19:57:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-11-16 19:57:10,029 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 83 [2022-11-16 19:57:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:10,029 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-11-16 19:57:10,029 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 19:57:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-11-16 19:57:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 19:57:10,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:10,031 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 19:57:10,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 19:57:10,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:10,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:10,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:10,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1188083589, now seen corresponding path program 1 times [2022-11-16 19:57:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558263748] [2022-11-16 19:57:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:10,644 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 19:57:10,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:10,645 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:10,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:11,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:11,655 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 19:57:11,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:11,821 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 19:57:11,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558263748] [2022-11-16 19:57:11,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558263748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:11,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1680141015] [2022-11-16 19:57:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:11,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:11,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 19:57:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:12,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:57:12,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:13,348 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 19:57:13,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:13,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1680141015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:13,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:57:13,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-16 19:57:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782805422] [2022-11-16 19:57:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:13,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:57:13,351 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 19:57:15,763 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 19:57:18,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:57:19,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:57:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:19,456 INFO L93 Difference]: Finished difference Result 668 states and 816 transitions. [2022-11-16 19:57:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:57:19,457 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 19:57:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:19,460 INFO L225 Difference]: With dead ends: 668 [2022-11-16 19:57:19,460 INFO L226 Difference]: Without dead ends: 410 [2022-11-16 19:57:19,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:57:19,462 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 412 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:19,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 447 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 19:57:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-16 19:57:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 378. [2022-11-16 19:57:19,509 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 19:57:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 451 transitions. [2022-11-16 19:57:19,511 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 451 transitions. Word has length 113 [2022-11-16 19:57:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:19,512 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 451 transitions. [2022-11-16 19:57:19,513 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 19:57:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 451 transitions. [2022-11-16 19:57:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 19:57:19,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:19,515 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 19:57:19,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:19,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-16 19:57:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:19,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2079236494, now seen corresponding path program 1 times [2022-11-16 19:57:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:19,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74064693] [2022-11-16 19:57:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:19,921 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 19:57:19,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:19,922 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:19,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:20,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:20,890 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 19:57:20,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:21,047 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 19:57:21,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74064693] [2022-11-16 19:57:21,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74064693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [608453844] [2022-11-16 19:57:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:21,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:21,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-16 19:57:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:22,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:22,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:22,654 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 19:57:22,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:22,762 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 19:57:22,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [608453844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777155488] [2022-11-16 19:57:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:22,764 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:22,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 19:57:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:23,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:57:23,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:23,788 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 19:57:23,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:23,939 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 19:57:23,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777155488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:23,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:57:23,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-16 19:57:23,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846428867] [2022-11-16 19:57:23,941 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:57:23,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:57:23,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:23,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:57:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:57:23,943 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 19:57:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:24,499 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2022-11-16 19:57:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 19:57:24,501 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 19:57:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:24,505 INFO L225 Difference]: With dead ends: 723 [2022-11-16 19:57:24,505 INFO L226 Difference]: Without dead ends: 393 [2022-11-16 19:57:24,507 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 19:57:24,508 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 19:57:24,509 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 19:57:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-16 19:57:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2022-11-16 19:57:24,539 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 19:57:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 469 transitions. [2022-11-16 19:57:24,541 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 469 transitions. Word has length 120 [2022-11-16 19:57:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:24,541 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 469 transitions. [2022-11-16 19:57:24,542 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 19:57:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 469 transitions. [2022-11-16 19:57:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 19:57:24,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:24,544 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 19:57:24,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:24,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:24,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:25,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:25,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash -180525716, now seen corresponding path program 2 times [2022-11-16 19:57:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:25,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137133658] [2022-11-16 19:57:25,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:57:25,160 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 19:57:25,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:25,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:25,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:26,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:57:26,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:26,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:57:26,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:26,460 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 19:57:26,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:26,847 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 19:57:26,847 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:26,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137133658] [2022-11-16 19:57:26,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137133658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:26,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [46226798] [2022-11-16 19:57:26,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:57:26,848 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:26,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:26,849 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:26,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-16 19:57:28,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:57:28,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:29,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:57:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:29,053 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 19:57:29,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:29,192 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 19:57:29,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [46226798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103764501] [2022-11-16 19:57:29,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:57:29,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:29,196 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:29,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 19:57:30,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:57:30,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:30,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:57:30,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:30,474 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 19:57:30,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:30,915 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 19:57:30,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103764501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:30,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:57:30,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-16 19:57:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461597511] [2022-11-16 19:57:30,919 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:57:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:57:30,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:57:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-16 19:57:30,922 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 19:57:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:32,398 INFO L93 Difference]: Finished difference Result 741 states and 900 transitions. [2022-11-16 19:57:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:57:32,400 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 19:57:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:32,402 INFO L225 Difference]: With dead ends: 741 [2022-11-16 19:57:32,402 INFO L226 Difference]: Without dead ends: 402 [2022-11-16 19:57:32,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 19:57:32,404 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:32,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2075 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 19:57:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-16 19:57:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 396. [2022-11-16 19:57:32,434 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 19:57:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 476 transitions. [2022-11-16 19:57:32,436 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 476 transitions. Word has length 126 [2022-11-16 19:57:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:32,437 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 476 transitions. [2022-11-16 19:57:32,437 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 19:57:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 476 transitions. [2022-11-16 19:57:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 19:57:32,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:32,439 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 19:57:32,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:32,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:32,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 19:57:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:33,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:33,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -493627384, now seen corresponding path program 3 times [2022-11-16 19:57:33,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:33,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589281699] [2022-11-16 19:57:33,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:57:33,061 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 19:57:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:33,062 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/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 19:57:38,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:57:38,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:38,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:57:38,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:38,412 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 19:57:38,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:38,938 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 19:57:38,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589281699] [2022-11-16 19:57:38,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589281699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15773020] [2022-11-16 19:57:38,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:57:38,939 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:38,947 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:38,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9a0128-5368-4ee2-b1e8-8843469d22b0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process