./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7 --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 7202e877c1332442c2c226005d8bd7e5f4094e339ca214931497ee0f3766da6a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:14:13,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:14:13,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:14:13,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:14:13,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:14:13,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:14:13,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:14:13,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:14:13,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:14:13,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:14:13,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:14:13,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:14:13,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:14:13,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:14:13,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:14:13,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:14:13,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:14:13,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:14:13,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:14:13,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:14:13,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:14:13,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:14:13,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:14:13,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:14:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:14:13,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:14:13,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:14:13,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:14:13,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:14:13,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:14:13,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:14:13,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:14:13,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:14:13,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:14:13,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:14:13,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:14:13,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:14:13,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:14:13,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:14:13,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:14:13,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:14:13,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:14:13,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:14:13,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:14:13,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:14:13,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:14:13,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:14:13,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:14:13,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:14:13,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:14:13,547 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:14:13,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:14:13,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:14:13,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:14:13,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:14:13,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:14:13,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:14:13,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:14:13,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:14:13,550 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:14:13,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:14:13,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:14:13,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:14:13,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:14:13,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:14:13,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:14:13,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:14:13,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:14:13,553 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:14:13,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:14:13,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:14:13,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:14:13,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:14:13,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:14:13,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:14:13,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:14:13,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:14:13,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:14:13,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:14:13,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:14:13,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:14:13,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:14:13,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:14:13,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7202e877c1332442c2c226005d8bd7e5f4094e339ca214931497ee0f3766da6a [2021-11-25 20:14:13,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:14:13,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:14:13,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:14:13,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:14:13,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:14:13,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-multidimensional/add-2-n-u.c [2021-11-25 20:14:13,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/data/877d88f70/cf570fafb239432a99ec92498504837e/FLAG705c274d5 [2021-11-25 20:14:14,422 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:14:14,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/sv-benchmarks/c/array-multidimensional/add-2-n-u.c [2021-11-25 20:14:14,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/data/877d88f70/cf570fafb239432a99ec92498504837e/FLAG705c274d5 [2021-11-25 20:14:14,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/data/877d88f70/cf570fafb239432a99ec92498504837e [2021-11-25 20:14:14,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:14:14,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:14:14,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:14:14,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:14:14,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:14:14,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:14:14" (1/1) ... [2021-11-25 20:14:14,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678bc5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:14, skipping insertion in model container [2021-11-25 20:14:14,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:14:14" (1/1) ... [2021-11-25 20:14:14,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:14:14,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:14:14,983 WARN L230 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_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/sv-benchmarks/c/array-multidimensional/add-2-n-u.c[321,334] [2021-11-25 20:14:15,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:14:15,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:14:15,023 WARN L230 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_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/sv-benchmarks/c/array-multidimensional/add-2-n-u.c[321,334] [2021-11-25 20:14:15,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:14:15,047 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:14:15,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15 WrapperNode [2021-11-25 20:14:15,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:14:15,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:14:15,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:14:15,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:14:15,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,085 INFO L137 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2021-11-25 20:14:15,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:14:15,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:14:15,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:14:15,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:14:15,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:14:15,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:14:15,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:14:15,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:14:15,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (1/1) ... [2021-11-25 20:14:15,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:14:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:15,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:14:15,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:14:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:14:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:14:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:14:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:14:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:14:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:14:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:14:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:14:15,276 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:14:15,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:14:15,504 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:14:15,548 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:14:15,561 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 20:14:15,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:14:15 BoogieIcfgContainer [2021-11-25 20:14:15,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:14:15,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:14:15,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:14:15,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:14:15,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:14:14" (1/3) ... [2021-11-25 20:14:15,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b022621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:14:15, skipping insertion in model container [2021-11-25 20:14:15,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:15" (2/3) ... [2021-11-25 20:14:15,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b022621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:14:15, skipping insertion in model container [2021-11-25 20:14:15,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:14:15" (3/3) ... [2021-11-25 20:14:15,588 INFO L111 eAbstractionObserver]: Analyzing ICFG add-2-n-u.c [2021-11-25 20:14:15,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:14:15,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:14:15,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:14:15,647 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:14:15,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:14:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:14:15,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:15,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:15,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -199734736, now seen corresponding path program 1 times [2021-11-25 20:14:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324249756] [2021-11-25 20:14:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:15,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:15,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:15,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490657405] [2021-11-25 20:14:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:15,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:15,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:15,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:15,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:14:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:15,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:14:15,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:16,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:14:16,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324249756] [2021-11-25 20:14:16,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:16,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490657405] [2021-11-25 20:14:16,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490657405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:16,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:16,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:14:16,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876489590] [2021-11-25 20:14:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:16,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:16,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:16,122 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 20:14:16,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:16,167 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2021-11-25 20:14:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:16,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-25 20:14:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:16,177 INFO L225 Difference]: With dead ends: 23 [2021-11-25 20:14:16,177 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 20:14:16,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:16,184 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:16,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:14:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 20:14:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-25 20:14:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) [2021-11-25 20:14:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-11-25 20:14:16,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 7 [2021-11-25 20:14:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:16,212 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-25 20:14:16,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 20:14:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2021-11-25 20:14:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:14:16,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:16,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:16,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:16,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:16,439 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash -692344784, now seen corresponding path program 1 times [2021-11-25 20:14:16,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:16,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517406858] [2021-11-25 20:14:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:16,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:16,449 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:16,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838434172] [2021-11-25 20:14:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:16,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:16,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:16,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:16,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:14:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:16,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:14:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:16,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:14:16,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:16,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517406858] [2021-11-25 20:14:16,549 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:16,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838434172] [2021-11-25 20:14:16,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838434172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:16,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:16,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:14:16,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726419146] [2021-11-25 20:14:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:16,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:14:16,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:14:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:16,553 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2021-11-25 20:14:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:16,597 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-11-25 20:14:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:14:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2021-11-25 20:14:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:16,599 INFO L225 Difference]: With dead ends: 31 [2021-11-25 20:14:16,599 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 20:14:16,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:16,601 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:16,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:14:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 20:14:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-11-25 20:14:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-11-25 20:14:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-11-25 20:14:16,608 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2021-11-25 20:14:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:16,608 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-11-25 20:14:16,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2021-11-25 20:14:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2021-11-25 20:14:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 20:14:16,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:16,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:16,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:16,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 20:14:16,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2131955188, now seen corresponding path program 1 times [2021-11-25 20:14:16,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:16,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293337318] [2021-11-25 20:14:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:16,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:16,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:16,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400989456] [2021-11-25 20:14:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:16,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:16,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:16,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:14:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:16,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:14:16,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:17,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:17,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293337318] [2021-11-25 20:14:17,103 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400989456] [2021-11-25 20:14:17,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400989456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:17,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [771166207] [2021-11-25 20:14:17,123 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 20:14:17,124 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:17,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:17,134 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:17,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:17,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,384 INFO L354 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2021-11-25 20:14:17,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 40 treesize of output 72 [2021-11-25 20:14:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,648 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:17,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 55 [2021-11-25 20:14:18,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:18,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:18,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:18,419 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:18,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:18,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:18,668 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:18,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:18,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:18,765 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:18,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:19,104 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:19,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [771166207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:19,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:19,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2021-11-25 20:14:19,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120156718] [2021-11-25 20:14:19,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:19,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:14:19,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:14:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:14:19,708 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:20,112 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-11-25 20:14:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:14:20,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 20:14:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:20,113 INFO L225 Difference]: With dead ends: 31 [2021-11-25 20:14:20,114 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:14:20,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:20,116 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:20,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:14:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2021-11-25 20:14:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-25 20:14:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-11-25 20:14:20,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2021-11-25 20:14:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:20,125 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-11-25 20:14:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2021-11-25 20:14:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:14:20,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:20,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:20,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:20,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:20,351 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1240462748, now seen corresponding path program 1 times [2021-11-25 20:14:20,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382052529] [2021-11-25 20:14:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:20,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:20,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:20,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415235998] [2021-11-25 20:14:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:20,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:20,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:14:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:20,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:14:20,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:20,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:20,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382052529] [2021-11-25 20:14:20,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415235998] [2021-11-25 20:14:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415235998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:20,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [408745390] [2021-11-25 20:14:20,556 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:14:20,556 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:20,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:20,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:20,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:20,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,706 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:20,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:20,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2021-11-25 20:14:20,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:20,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2021-11-25 20:14:21,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:21,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,251 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:21,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:21,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,440 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:21,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:21,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,501 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:21,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:21,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,772 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:21,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:21,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:21,900 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:21,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:22,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,065 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:22,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:22,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,183 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:22,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:22,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,354 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:22,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:22,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:22,505 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:22,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:22,544 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:23,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '426#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:14:23,693 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:14:23,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:23,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-25 20:14:23,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107186043] [2021-11-25 20:14:23,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:23,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:14:23,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:14:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:14:23,696 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-11-25 20:14:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:23,837 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2021-11-25 20:14:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:14:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 13 [2021-11-25 20:14:23,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:23,838 INFO L225 Difference]: With dead ends: 52 [2021-11-25 20:14:23,838 INFO L226 Difference]: Without dead ends: 38 [2021-11-25 20:14:23,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:14:23,840 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:23,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 15 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-25 20:14:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-11-25 20:14:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) [2021-11-25 20:14:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-11-25 20:14:23,875 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 13 [2021-11-25 20:14:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:23,876 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-25 20:14:23,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-11-25 20:14:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-11-25 20:14:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:14:23,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:23,877 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:23,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 20:14:24,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:24,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:24,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash -841573940, now seen corresponding path program 2 times [2021-11-25 20:14:24,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:24,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557822856] [2021-11-25 20:14:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:24,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:24,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:24,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721459649] [2021-11-25 20:14:24,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:14:24,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:24,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:24,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:24,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:14:24,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:14:24,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:24,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:14:24,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:14:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:14:24,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557822856] [2021-11-25 20:14:24,318 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721459649] [2021-11-25 20:14:24,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721459649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1752751996] [2021-11-25 20:14:24,326 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:14:24,327 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:24,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:24,333 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:24,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:24,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,452 INFO L354 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2021-11-25 20:14:24,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 40 treesize of output 72 [2021-11-25 20:14:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,584 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:24,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:24,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 55 [2021-11-25 20:14:25,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:25,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,047 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:25,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:25,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,184 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:25,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:25,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,239 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:25,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:25,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,554 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:25,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:25,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,640 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:25,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:25,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,784 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:25,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:25,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,873 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:25,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:25,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:25,981 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:25,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:26,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,080 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:26,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:26,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,221 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:26,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:26,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:26,333 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:26,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:26,371 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:27,251 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '693#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:14:27,251 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:14:27,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:27,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-11-25 20:14:27,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104724124] [2021-11-25 20:14:27,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:27,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:14:27,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:14:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:27,253 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:27,320 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2021-11-25 20:14:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:14:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-25 20:14:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:27,323 INFO L225 Difference]: With dead ends: 72 [2021-11-25 20:14:27,323 INFO L226 Difference]: Without dead ends: 49 [2021-11-25 20:14:27,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:27,325 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:27,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:14:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-25 20:14:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-25 20:14:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 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) [2021-11-25 20:14:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2021-11-25 20:14:27,345 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 19 [2021-11-25 20:14:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:27,345 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-11-25 20:14:27,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-11-25 20:14:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:14:27,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:27,347 INFO L514 BasicCegarLoop]: trace histogram [16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:27,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 20:14:27,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:27,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1454414132, now seen corresponding path program 3 times [2021-11-25 20:14:27,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:27,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892371817] [2021-11-25 20:14:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:27,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:27,581 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:27,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895564794] [2021-11-25 20:14:27,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:14:27,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:27,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:27,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:14:33,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:14:33,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:33,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:33,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-25 20:14:33,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-25 20:14:33,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:33,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892371817] [2021-11-25 20:14:33,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:33,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895564794] [2021-11-25 20:14:33,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895564794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:33,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453589126] [2021-11-25 20:14:33,285 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:14:33,285 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:33,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:33,286 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:33,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,392 INFO L354 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2021-11-25 20:14:33,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 40 treesize of output 72 [2021-11-25 20:14:33,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,531 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:33,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:33,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2021-11-25 20:14:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:33,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:33,967 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:33,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:34,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,099 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:34,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:34,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,155 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:34,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:34,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,395 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:34,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:34,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,478 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:34,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:34,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,607 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:34,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:34,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,701 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:34,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:34,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,794 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:34,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:34,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,879 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:34,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:34,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:34,985 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:35,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:35,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:35,089 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:35,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:35,121 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:36,024 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1151#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:14:36,024 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:14:36,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:36,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-25 20:14:36,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375187391] [2021-11-25 20:14:36,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:36,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:14:36,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:14:36,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:14:36,027 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2021-11-25 20:14:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:36,316 INFO L93 Difference]: Finished difference Result 158 states and 212 transitions. [2021-11-25 20:14:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:14:36,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 37 [2021-11-25 20:14:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:36,323 INFO L225 Difference]: With dead ends: 158 [2021-11-25 20:14:36,323 INFO L226 Difference]: Without dead ends: 116 [2021-11-25 20:14:36,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=231, Invalid=369, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:14:36,327 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 142 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:36,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 33 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:14:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-25 20:14:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2021-11-25 20:14:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1875) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-11-25 20:14:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2021-11-25 20:14:36,367 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 37 [2021-11-25 20:14:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:36,367 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2021-11-25 20:14:36,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2021-11-25 20:14:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2021-11-25 20:14:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:14:36,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:36,372 INFO L514 BasicCegarLoop]: trace histogram [40, 10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:36,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 20:14:36,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:14:36,588 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2081508276, now seen corresponding path program 4 times [2021-11-25 20:14:36,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:36,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608107409] [2021-11-25 20:14:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:36,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:36,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917661020] [2021-11-25 20:14:36,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:14:36,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:36,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:36,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:14:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:36,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 20:14:36,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-11-25 20:14:37,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-11-25 20:14:37,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608107409] [2021-11-25 20:14:37,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917661020] [2021-11-25 20:14:37,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917661020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:37,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101119861] [2021-11-25 20:14:37,352 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:14:37,352 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:37,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:37,353 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:37,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:37,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,438 INFO L354 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2021-11-25 20:14:37,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 40 treesize of output 72 [2021-11-25 20:14:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,552 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:37,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2021-11-25 20:14:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:37,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:37,915 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:37,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:38,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,047 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:38,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:38,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,093 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:38,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:38,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,352 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:38,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:38,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,432 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:38,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:38,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,585 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:38,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:38,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,674 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:38,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:38,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,755 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:38,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:38,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,862 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:38,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:38,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:38,981 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:38,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:39,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:39,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:39,064 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:39,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:39,087 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:39,895 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2049#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:14:39,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:14:39,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:39,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-25 20:14:39,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331766424] [2021-11-25 20:14:39,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:39,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 20:14:39,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 20:14:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=588, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:14:39,898 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-25 20:14:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:40,471 INFO L93 Difference]: Finished difference Result 320 states and 416 transitions. [2021-11-25 20:14:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:14:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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 67 [2021-11-25 20:14:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:40,474 INFO L225 Difference]: With dead ends: 320 [2021-11-25 20:14:40,474 INFO L226 Difference]: Without dead ends: 236 [2021-11-25 20:14:40,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=723, Invalid=1083, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 20:14:40,476 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 302 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:40,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 69 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:14:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-25 20:14:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 193. [2021-11-25 20:14:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.15625) internal successors, (222), 192 states have internal predecessors, (222), 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) [2021-11-25 20:14:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2021-11-25 20:14:40,511 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 67 [2021-11-25 20:14:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:40,512 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2021-11-25 20:14:40,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-25 20:14:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2021-11-25 20:14:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 20:14:40,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:40,514 INFO L514 BasicCegarLoop]: trace histogram [88, 22, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:40,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:40,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 20:14:40,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 502361932, now seen corresponding path program 5 times [2021-11-25 20:14:40,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:40,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753534299] [2021-11-25 20:14:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:40,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:40,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:40,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287358795] [2021-11-25 20:14:40,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:14:40,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:40,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:40,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:14:41,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:14:41,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:14:41,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4450 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4449 trivial. 0 not checked. [2021-11-25 20:14:41,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4450 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4449 trivial. 0 not checked. [2021-11-25 20:14:41,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:41,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753534299] [2021-11-25 20:14:41,729 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:14:41,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287358795] [2021-11-25 20:14:41,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287358795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879009438] [2021-11-25 20:14:41,732 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:14:41,732 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:14:41,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:14:41,733 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:14:41,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:14:41,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,863 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:14:41,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:14:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2021-11-25 20:14:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:41,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 55 [2021-11-25 20:14:42,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:42,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,302 INFO L354 Elim1Store]: treesize reduction 130, result has 16.1 percent of original size [2021-11-25 20:14:42,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 425 treesize of output 400 [2021-11-25 20:14:42,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,441 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:42,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:42,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,488 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-25 20:14:42,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 39 [2021-11-25 20:14:42,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,712 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:42,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:42,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,792 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:42,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:42,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:42,946 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:42,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:43,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,056 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:43,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:43,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,145 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:43,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:43,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,245 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:43,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:43,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,374 INFO L354 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2021-11-25 20:14:43,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 58 [2021-11-25 20:14:43,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:14:43,478 INFO L354 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2021-11-25 20:14:43,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2021-11-25 20:14:43,506 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:14:44,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3763#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:14:44,343 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:14:44,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-25 20:14:44,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829010532] [2021-11-25 20:14:44,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:14:44,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:14:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:14:44,345 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:44,516 INFO L93 Difference]: Finished difference Result 546 states and 669 transitions. [2021-11-25 20:14:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:14:44,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-25 20:14:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:44,520 INFO L225 Difference]: With dead ends: 546 [2021-11-25 20:14:44,520 INFO L226 Difference]: Without dead ends: 476 [2021-11-25 20:14:44,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:14:44,522 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:44,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 16 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-25 20:14:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 265. [2021-11-25 20:14:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.125) internal successors, (297), 264 states have internal predecessors, (297), 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) [2021-11-25 20:14:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 297 transitions. [2021-11-25 20:14:44,575 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 297 transitions. Word has length 127 [2021-11-25 20:14:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:44,576 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 297 transitions. [2021-11-25 20:14:44,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:14:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 297 transitions. [2021-11-25 20:14:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-25 20:14:44,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:44,579 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:44,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:44,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:44,793 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 109665440, now seen corresponding path program 6 times [2021-11-25 20:14:44,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:44,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386944781] [2021-11-25 20:14:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:44,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:44,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:14:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847571663] [2021-11-25 20:14:44,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:14:44,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:44,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:44,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:44,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee5f15e-2b99-4efd-b97c-cb03ecc35e91/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process