./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array5_pattern.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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array5_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/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 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:50:50,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:50:50,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:50:50,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:50:50,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:50:50,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:50:50,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:50:50,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:50:50,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:50:50,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:50:50,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:50:50,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:50:50,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:50:50,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:50:50,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:50:50,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:50:50,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:50:50,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:50:50,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:50:50,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:50:50,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:50:50,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:50:50,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:50:50,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:50:50,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:50:50,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:50:50,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:50:50,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:50:50,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:50:50,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:50:50,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:50:50,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:50:50,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:50:50,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:50:50,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:50:50,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:50:50,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:50:50,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:50:50,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:50:50,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:50:50,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:50:50,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:50:50,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:50:50,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:50:50,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:50:50,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:50:50,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:50:50,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:50:50,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:50:50,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:50:50,713 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:50:50,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:50:50,715 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:50:50,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:50:50,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:50:50,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:50:50,715 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:50:50,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:50:50,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:50:50,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:50:50,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:50:50,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:50:50,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:50:50,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:50:50,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:50:50,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:50:50,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:50:50,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:50:50,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:50:50,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:50:50,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:50:50,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:50:50,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:50:50,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:50:50,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:50:50,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:50:50,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:50:50,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:50:50,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:50:50,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:50:50,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:50:50,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:50:50,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:50:50,724 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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 [2021-11-25 18:50:51,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:50:51,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:50:51,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:50:51,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:50:51,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:50:51,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array5_pattern.c [2021-11-25 18:50:51,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/e04ec76b1/a460370ae9d14d489d0187c60dfc2825/FLAGa6173d875 [2021-11-25 18:50:51,819 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:50:51,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c [2021-11-25 18:50:51,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/e04ec76b1/a460370ae9d14d489d0187c60dfc2825/FLAGa6173d875 [2021-11-25 18:50:52,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/e04ec76b1/a460370ae9d14d489d0187c60dfc2825 [2021-11-25 18:50:52,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:50:52,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:50:52,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:50:52,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:50:52,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:50:52,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59595ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52, skipping insertion in model container [2021-11-25 18:50:52,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:50:52,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:50:52,460 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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-11-25 18:50:52,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:50:52,491 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:50:52,505 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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-11-25 18:50:52,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:50:52,531 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:50:52,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52 WrapperNode [2021-11-25 18:50:52,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:50:52,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:50:52,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:50:52,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:50:52,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,575 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2021-11-25 18:50:52,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:50:52,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:50:52,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:50:52,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:50:52,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:50:52,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:50:52,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:50:52,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:50:52,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (1/1) ... [2021-11-25 18:50:52,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:50:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:52,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:50:52,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:50:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:50:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:50:52,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:50:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:50:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:50:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:50:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:50:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:50:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:50:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:50:52,795 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:50:52,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:50:52,988 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:50:53,085 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:50:53,085 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:50:53,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:50:53 BoogieIcfgContainer [2021-11-25 18:50:53,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:50:53,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:50:53,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:50:53,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:50:53,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:50:52" (1/3) ... [2021-11-25 18:50:53,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411df605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:50:53, skipping insertion in model container [2021-11-25 18:50:53,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:52" (2/3) ... [2021-11-25 18:50:53,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411df605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:50:53, skipping insertion in model container [2021-11-25 18:50:53,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:50:53" (3/3) ... [2021-11-25 18:50:53,097 INFO L111 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2021-11-25 18:50:53,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:50:53,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:50:53,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:50:53,185 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 18:50:53,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:50:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:50:53,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:53,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:53,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:50:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash 959661797, now seen corresponding path program 1 times [2021-11-25 18:50:53,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:53,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354362814] [2021-11-25 18:50:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:53,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:53,550 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 18:50:53,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:53,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354362814] [2021-11-25 18:50:53,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354362814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:53,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:53,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:50:53,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710205935] [2021-11-25 18:50:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:53,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:50:53,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:50:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:50:53,609 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:50:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:53,680 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-25 18:50:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:50:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-25 18:50:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:53,699 INFO L225 Difference]: With dead ends: 24 [2021-11-25 18:50:53,699 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:50:53,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:50:53,709 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:53,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:50:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:50:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-25 18:50:53,780 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2021-11-25 18:50:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:53,783 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-25 18:50:53,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:50:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-25 18:50:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:50:53,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:53,788 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:53,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:50:53,790 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:50:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash 156202947, now seen corresponding path program 1 times [2021-11-25 18:50:53,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:53,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980522889] [2021-11-25 18:50:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:53,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:53,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:53,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585005204] [2021-11-25 18:50:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:53,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:53,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:53,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:50:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:53,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:50:54,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:50:54,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:50:54,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:54,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980522889] [2021-11-25 18:50:54,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:54,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585005204] [2021-11-25 18:50:54,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585005204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:54,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:54,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:50:54,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796101937] [2021-11-25 18:50:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:54,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:50:54,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:50:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:50:54,184 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:54,245 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-11-25 18:50:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:50:54,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-25 18:50:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:54,249 INFO L225 Difference]: With dead ends: 19 [2021-11-25 18:50:54,256 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:50:54,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:50:54,259 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:54,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:50:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:50:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-25 18:50:54,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2021-11-25 18:50:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:54,280 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-25 18:50:54,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-25 18:50:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:50:54,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:54,284 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:54,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:54,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:54,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:50:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 547086701, now seen corresponding path program 1 times [2021-11-25 18:50:54,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:54,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739200950] [2021-11-25 18:50:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:54,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:54,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:54,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653730909] [2021-11-25 18:50:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:54,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:54,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:54,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:54,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:50:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:54,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:50:54,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:54,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:50:54,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:54,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739200950] [2021-11-25 18:50:54,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653730909] [2021-11-25 18:50:54,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653730909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:54,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:54,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:50:54,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197271964] [2021-11-25 18:50:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:54,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:50:54,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:50:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:50:54,770 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:54,866 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-25 18:50:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:50:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-25 18:50:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:54,869 INFO L225 Difference]: With dead ends: 29 [2021-11-25 18:50:54,870 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:50:54,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:50:54,874 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:54,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 38 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:50:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:50:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:50:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-25 18:50:54,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2021-11-25 18:50:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:54,892 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-25 18:50:54,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:50:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-25 18:50:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:50:54,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:54,894 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:54,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:55,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:55,123 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:50:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1616883104, now seen corresponding path program 1 times [2021-11-25 18:50:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415337659] [2021-11-25 18:50:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:55,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:55,164 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:55,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652753417] [2021-11-25 18:50:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:55,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:55,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:50:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:55,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 18:50:55,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:55,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:50:55,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 18:50:55,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:55,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-11-25 18:50:55,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2021-11-25 18:50:55,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 18:50:55,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 18:50:56,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:50:56,177 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 18:50:56,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 24 [2021-11-25 18:50:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:56,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:56,424 INFO L354 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2021-11-25 18:50:56,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 98 treesize of output 113 [2021-11-25 18:50:56,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:56,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 64 [2021-11-25 18:50:56,563 INFO L354 Elim1Store]: treesize reduction 29, result has 64.2 percent of original size [2021-11-25 18:50:56,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 79 treesize of output 111 [2021-11-25 18:50:56,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:56,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 87 [2021-11-25 18:50:56,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-25 18:50:56,945 INFO L354 Elim1Store]: treesize reduction 32, result has 46.7 percent of original size [2021-11-25 18:50:56,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 94 [2021-11-25 18:50:57,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-25 18:50:57,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:50:57,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 18:50:57,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:57,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2021-11-25 18:50:57,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:57,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 98 [2021-11-25 18:50:57,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:57,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 104 [2021-11-25 18:50:57,605 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:57,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 152 [2021-11-25 18:50:58,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-25 18:50:58,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-25 18:50:58,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-25 18:50:58,197 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-25 18:50:58,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-25 18:50:58,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:58,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-11-25 18:50:58,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:58,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2021-11-25 18:50:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:50:59,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415337659] [2021-11-25 18:50:59,216 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652753417] [2021-11-25 18:50:59,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652753417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:59,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1221341411] [2021-11-25 18:50:59,239 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:50:59,239 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:59,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:59,253 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:59,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,459 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:50:59,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:50:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,577 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:50:59,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:50:59,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:50:59,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:50:59,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:50:59,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:50:59,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:50:59,857 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:50:59,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:51:00,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:00,025 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:00,026 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 42 treesize of output 25 [2021-11-25 18:51:00,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:00,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:00,133 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:51:00,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:51:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:00,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:00,174 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:51:00,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:51:00,282 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:00,325 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:02,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '419#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:02,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:02,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:02,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-11-25 18:51:02,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331256398] [2021-11-25 18:51:02,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:02,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 18:51:02,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:02,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 18:51:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:51:02,632 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:51:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:03,275 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-11-25 18:51:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:51:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2021-11-25 18:51:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:03,278 INFO L225 Difference]: With dead ends: 38 [2021-11-25 18:51:03,278 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 18:51:03,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 18:51:03,280 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:03,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 123 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 29 Unchecked, 0.4s Time] [2021-11-25 18:51:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 18:51:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-11-25 18:51:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 18:51:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-11-25 18:51:03,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2021-11-25 18:51:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:03,293 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-11-25 18:51:03,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:51:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-11-25 18:51:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:51:03,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:03,295 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:03,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:03,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:03,523 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:03,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1416468688, now seen corresponding path program 2 times [2021-11-25 18:51:03,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:03,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216593257] [2021-11-25 18:51:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:03,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:03,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:03,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854565382] [2021-11-25 18:51:03,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:51:03,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:03,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:03,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:03,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:51:03,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:51:03,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:51:03,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:51:03,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:03,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:51:03,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:03,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216593257] [2021-11-25 18:51:03,833 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:03,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854565382] [2021-11-25 18:51:03,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854565382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:03,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660032996] [2021-11-25 18:51:03,836 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:03,837 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:03,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:03,837 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:03,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:03,986 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:51:03,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:51:04,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,119 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:04,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:04,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:51:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,395 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:51:04,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:51:04,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,748 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:04,748 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 42 treesize of output 25 [2021-11-25 18:51:04,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,844 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:51:04,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:51:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:04,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:04,890 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:51:04,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:51:05,038 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:05,075 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:07,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '660#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:07,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:07,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:07,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-25 18:51:07,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513207227] [2021-11-25 18:51:07,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:07,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:51:07,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:51:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:51:07,312 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:07,446 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-11-25 18:51:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:51:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-11-25 18:51:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:07,448 INFO L225 Difference]: With dead ends: 54 [2021-11-25 18:51:07,448 INFO L226 Difference]: Without dead ends: 47 [2021-11-25 18:51:07,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:51:07,450 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:07,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 53 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:51:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-25 18:51:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-11-25 18:51:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 18:51:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-11-25 18:51:07,459 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 19 [2021-11-25 18:51:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:07,460 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-11-25 18:51:07,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-11-25 18:51:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:51:07,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:07,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:07,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:07,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:07,675 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 420833229, now seen corresponding path program 3 times [2021-11-25 18:51:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:07,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078717779] [2021-11-25 18:51:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:07,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:07,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:07,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115963805] [2021-11-25 18:51:07,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:51:07,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:07,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:07,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:07,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:51:07,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:51:07,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:51:07,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:51:07,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:07,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:51:07,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:07,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078717779] [2021-11-25 18:51:07,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:07,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115963805] [2021-11-25 18:51:07,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115963805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:07,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751840492] [2021-11-25 18:51:07,942 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:07,942 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:07,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:07,943 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:07,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:07,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,058 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:51:08,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:51:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,191 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:08,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:51:08,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,483 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:51:08,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:51:08,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,660 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:08,661 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 42 treesize of output 25 [2021-11-25 18:51:08,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,765 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:51:08,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:51:08,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:08,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:08,804 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:51:08,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:51:08,951 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:08,984 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:11,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '931#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:11,187 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:11,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:11,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-25 18:51:11,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708983157] [2021-11-25 18:51:11,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:11,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:51:11,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:11,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:51:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:51:11,189 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:11,390 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-11-25 18:51:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:51:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-11-25 18:51:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:11,392 INFO L225 Difference]: With dead ends: 49 [2021-11-25 18:51:11,392 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 18:51:11,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:51:11,394 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:11,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 43 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:51:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 18:51:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-25 18:51:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 18:51:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-11-25 18:51:11,415 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 19 [2021-11-25 18:51:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:11,415 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-11-25 18:51:11,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-11-25 18:51:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:51:11,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:11,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:11,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:11,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:11,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 160690851, now seen corresponding path program 4 times [2021-11-25 18:51:11,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142518761] [2021-11-25 18:51:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:11,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:11,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:11,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283144334] [2021-11-25 18:51:11,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:51:11,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:11,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:11,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:51:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:11,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-25 18:51:11,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:11,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:51:11,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:11,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 18:51:11,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 18:51:11,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:51:11,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:51:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:11,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-11-25 18:51:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,508 INFO L354 Elim1Store]: treesize reduction 168, result has 40.2 percent of original size [2021-11-25 18:51:12,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 125 treesize of output 189 [2021-11-25 18:51:12,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2021-11-25 18:51:12,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:12,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:12,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:12,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2021-11-25 18:51:13,615 INFO L354 Elim1Store]: treesize reduction 76, result has 37.2 percent of original size [2021-11-25 18:51:13,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 83 [2021-11-25 18:51:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:13,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:22,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142518761] [2021-11-25 18:51:22,595 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283144334] [2021-11-25 18:51:22,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283144334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:51:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444421295] [2021-11-25 18:51:22,598 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:22,598 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:22,598 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:22,598 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:22,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:22,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,716 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:51:22,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:51:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,832 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:22,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:51:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:22,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:23,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:23,055 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:51:23,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:51:23,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:23,172 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:23,172 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 42 treesize of output 25 [2021-11-25 18:51:23,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:23,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:23,467 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:51:23,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:51:23,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:51:23,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:23,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 18:51:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:23,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-25 18:51:23,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:23,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-25 18:51:23,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:23,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-25 18:51:24,050 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 18:51:24,053 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:28,883 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1186#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:28,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:28,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:51:28,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-25 18:51:28,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330834455] [2021-11-25 18:51:28,884 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:28,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:51:28,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:51:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=862, Unknown=2, NotChecked=0, Total=992 [2021-11-25 18:51:28,886 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:51:29,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:29,226 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-11-25 18:51:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:51:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-25 18:51:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:29,232 INFO L225 Difference]: With dead ends: 62 [2021-11-25 18:51:29,233 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 18:51:29,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=132, Invalid=922, Unknown=2, NotChecked=0, Total=1056 [2021-11-25 18:51:29,234 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:29,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 131 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2021-11-25 18:51:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 18:51:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2021-11-25 18:51:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 18:51:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-11-25 18:51:29,246 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 20 [2021-11-25 18:51:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:29,246 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-11-25 18:51:29,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:51:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-11-25 18:51:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:51:29,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:29,248 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:29,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:29,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:29,455 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 686211725, now seen corresponding path program 5 times [2021-11-25 18:51:29,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:29,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428209965] [2021-11-25 18:51:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:29,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:29,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:29,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417657943] [2021-11-25 18:51:29,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:51:29,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:29,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:29,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:29,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:51:29,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:51:29,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:51:29,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:51:29,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:29,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:51:29,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:29,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428209965] [2021-11-25 18:51:29,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417657943] [2021-11-25 18:51:29,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417657943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982056590] [2021-11-25 18:51:29,781 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:29,781 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:29,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:29,782 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:29,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:29,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,923 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:29,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 18:51:29,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:29,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:51:30,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:30,155 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:51:30,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:51:30,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:30,270 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:30,271 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 42 treesize of output 25 [2021-11-25 18:51:30,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:30,565 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:51:30,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:51:30,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:51:30,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 18:51:30,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-25 18:51:30,683 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:30,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:30,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-25 18:51:30,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:31,086 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:31,117 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:33,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1503#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:33,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:33,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:33,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-25 18:51:33,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718732036] [2021-11-25 18:51:33,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:33,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:51:33,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:51:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:51:33,365 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:33,672 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-11-25 18:51:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:51:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-25 18:51:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:33,674 INFO L225 Difference]: With dead ends: 94 [2021-11-25 18:51:33,674 INFO L226 Difference]: Without dead ends: 86 [2021-11-25 18:51:33,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:51:33,676 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:33,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 95 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:51:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-25 18:51:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 55. [2021-11-25 18:51:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 18:51:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-11-25 18:51:33,691 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 21 [2021-11-25 18:51:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:33,691 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-11-25 18:51:33,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-11-25 18:51:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:51:33,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:33,693 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:33,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:33,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:33,908 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1807996304, now seen corresponding path program 6 times [2021-11-25 18:51:33,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429853403] [2021-11-25 18:51:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:33,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:33,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:33,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444749580] [2021-11-25 18:51:33,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:51:33,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:33,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:33,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:51:34,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:51:34,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:51:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:51:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:34,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:51:34,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429853403] [2021-11-25 18:51:34,264 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444749580] [2021-11-25 18:51:34,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444749580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:34,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112943687] [2021-11-25 18:51:34,267 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:34,267 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:34,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:34,268 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:34,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:34,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,398 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:34,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:34,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 18:51:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:51:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,671 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:51:34,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:51:34,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,823 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:34,823 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 42 treesize of output 25 [2021-11-25 18:51:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,924 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:51:34,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:51:34,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:34,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:34,978 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:51:34,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:51:35,108 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:35,137 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:37,503 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1882#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.offset|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= 0 |#NULL.offset|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:37,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:37,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:37,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-25 18:51:37,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275968977] [2021-11-25 18:51:37,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:37,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:51:37,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:51:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:51:37,506 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:37,976 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-11-25 18:51:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:51:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-25 18:51:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:37,978 INFO L225 Difference]: With dead ends: 80 [2021-11-25 18:51:37,978 INFO L226 Difference]: Without dead ends: 77 [2021-11-25 18:51:37,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:51:37,980 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:37,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 86 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:51:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-25 18:51:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2021-11-25 18:51:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 18:51:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-11-25 18:51:38,008 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 21 [2021-11-25 18:51:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:38,009 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-11-25 18:51:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:51:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-11-25 18:51:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:51:38,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:38,011 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:38,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-25 18:51:38,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:38,230 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash 213073216, now seen corresponding path program 7 times [2021-11-25 18:51:38,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:38,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663498222] [2021-11-25 18:51:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:38,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:38,250 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014006407] [2021-11-25 18:51:38,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:51:38,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:38,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:38,256 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:51:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:38,368 WARN L261 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-25 18:51:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:38,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:51:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 18:51:38,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 18:51:38,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:51:38,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:51:38,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:51:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:38,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2021-11-25 18:51:40,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,836 INFO L354 Elim1Store]: treesize reduction 264, result has 39.6 percent of original size [2021-11-25 18:51:40,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 255 [2021-11-25 18:51:40,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:40,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 21 [2021-11-25 18:51:40,942 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:41,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:41,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 33 [2021-11-25 18:51:41,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:41,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 21 [2021-11-25 18:51:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:42,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 27 [2021-11-25 18:51:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:43,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 21 [2021-11-25 18:51:45,073 INFO L354 Elim1Store]: treesize reduction 288, result has 35.9 percent of original size [2021-11-25 18:51:45,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 314 treesize of output 298 [2021-11-25 18:51:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:47,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:50,179 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_ULTIMATE.start_main_~index~0#1_40| Int)) (= (let ((.cse3 (* |aux_div_ULTIMATE.start_main_~index~0#1_40| 8))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse0 (store (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse1 (select (store .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))))) 0)) (forall ((|aux_mod_ULTIMATE.start_main_~index~0#1_40| Int) (|aux_div_ULTIMATE.start_main_~index~0#1_40| Int)) (or (= 0 (let ((.cse7 (* |aux_mod_ULTIMATE.start_main_~index~0#1_40| 4)) (.cse8 (* |aux_div_ULTIMATE.start_main_~index~0#1_40| 8))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse7 .cse8) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse4 (store (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse8) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse5 (select (store .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse4) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)))))))) (= |aux_mod_ULTIMATE.start_main_~index~0#1_40| 0) (<= 2 |aux_mod_ULTIMATE.start_main_~index~0#1_40|) (< |aux_mod_ULTIMATE.start_main_~index~0#1_40| 0)))) is different from false [2021-11-25 18:51:50,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:50,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663498222] [2021-11-25 18:51:50,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014006407] [2021-11-25 18:51:50,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014006407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:51:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2138758413] [2021-11-25 18:51:50,314 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:50,314 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:50,314 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:50,315 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:50,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:50,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,458 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:51:50,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:51:50,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,579 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:50,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:51:50,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:50,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:50,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:50,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:50,850 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:51:50,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:51:50,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:51,000 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:51,000 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 42 treesize of output 25 [2021-11-25 18:51:51,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:51,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:51,105 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:51:51,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:51:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:51,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:51,134 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:51:51,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:51:51,226 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:51:51,249 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:53,644 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2223#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:53,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:53,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:51:53,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-25 18:51:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689763382] [2021-11-25 18:51:53,645 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:51:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:51:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=933, Unknown=3, NotChecked=62, Total=1122 [2021-11-25 18:51:53,646 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:51:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:54,118 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2021-11-25 18:51:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 18:51:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-25 18:51:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:54,120 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:51:54,120 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 18:51:54,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=177, Invalid=1384, Unknown=3, NotChecked=76, Total=1640 [2021-11-25 18:51:54,122 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:54,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 116 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 137 Invalid, 0 Unknown, 53 Unchecked, 0.3s Time] [2021-11-25 18:51:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 18:51:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2021-11-25 18:51:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 18:51:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-11-25 18:51:54,139 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 22 [2021-11-25 18:51:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:54,139 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-11-25 18:51:54,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:51:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-11-25 18:51:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:51:54,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:54,142 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:51:54,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:54,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:51:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1984902256, now seen corresponding path program 8 times [2021-11-25 18:51:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403462283] [2021-11-25 18:51:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:54,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:54,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:51:54,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122576972] [2021-11-25 18:51:54,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:51:54,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:54,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:54,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:51:54,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 18:51:54,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:51:54,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:51:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:54,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:51:54,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:54,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403462283] [2021-11-25 18:51:54,823 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:54,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122576972] [2021-11-25 18:51:54,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122576972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:54,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [400854020] [2021-11-25 18:51:54,826 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:51:54,826 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:54,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:54,827 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:54,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:54,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:54,967 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:51:54,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:51:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,106 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:51:55,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:51:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:51:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,345 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:51:55,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:51:55,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,448 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:51:55,448 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 42 treesize of output 25 [2021-11-25 18:51:55,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,757 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:51:55,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:51:55,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,813 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:51:55,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-25 18:51:55,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-25 18:51:55,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:51:55,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 18:51:55,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:51:55,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 18:51:55,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:51:55,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:51:56,180 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 18:51:56,182 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:59,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2621#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:51:59,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:59,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:51:59,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-25 18:51:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217557442] [2021-11-25 18:51:59,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:59,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 18:51:59,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 18:51:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2021-11-25 18:51:59,625 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:52:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:00,035 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2021-11-25 18:52:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:52:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-11-25 18:52:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:00,037 INFO L225 Difference]: With dead ends: 151 [2021-11-25 18:52:00,037 INFO L226 Difference]: Without dead ends: 142 [2021-11-25 18:52:00,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 18:52:00,039 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:00,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 121 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:52:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-25 18:52:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 79. [2021-11-25 18:52:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 59 states have internal predecessors, (69), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 18:52:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2021-11-25 18:52:00,063 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 23 [2021-11-25 18:52:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:00,064 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2021-11-25 18:52:00,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:52:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2021-11-25 18:52:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:52:00,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:00,066 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:52:00,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:52:00,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:52:00,279 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:52:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1404476029, now seen corresponding path program 9 times [2021-11-25 18:52:00,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:00,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691213525] [2021-11-25 18:52:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:00,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:00,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:52:00,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119005707] [2021-11-25 18:52:00,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:52:00,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:52:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:52:00,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:52:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:52:00,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:52:00,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:52:00,550 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-25 18:52:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:52:00,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:52:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-11-25 18:52:00,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-25 18:52:00,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-25 18:52:00,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2021-11-25 18:52:00,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2021-11-25 18:52:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:00,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2021-11-25 18:52:01,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,836 INFO L354 Elim1Store]: treesize reduction 360, result has 39.3 percent of original size [2021-11-25 18:52:01,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 161 treesize of output 321 [2021-11-25 18:52:01,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:01,978 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:52:01,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 139 treesize of output 131 [2021-11-25 18:52:02,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 27 [2021-11-25 18:52:02,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:02,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:02,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 63 [2021-11-25 18:52:02,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:05,273 INFO L354 Elim1Store]: treesize reduction 148, result has 36.5 percent of original size [2021-11-25 18:52:05,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 297 treesize of output 205 [2021-11-25 18:52:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:52:05,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:52:17,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691213525] [2021-11-25 18:52:17,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:52:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119005707] [2021-11-25 18:52:17,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119005707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:52:17,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034854180] [2021-11-25 18:52:17,287 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:52:17,287 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:52:17,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:52:17,288 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:52:17,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:52:17,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,414 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:52:17,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:52:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,522 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:52:17,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:52:17,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:52:17,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:17,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:17,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:17,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:17,783 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:52:17,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:52:17,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:17,957 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:52:17,957 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 42 treesize of output 25 [2021-11-25 18:52:18,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:18,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:18,064 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:52:18,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:52:18,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:18,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:18,104 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:52:18,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:52:18,225 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:52:18,253 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:52:21,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3125#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:52:21,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:52:21,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:52:21,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-25 18:52:21,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381044484] [2021-11-25 18:52:21,499 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:52:21,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 18:52:21,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 18:52:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1257, Unknown=1, NotChecked=0, Total=1406 [2021-11-25 18:52:21,501 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:52:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:21,854 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2021-11-25 18:52:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:52:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-25 18:52:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:21,855 INFO L225 Difference]: With dead ends: 101 [2021-11-25 18:52:21,855 INFO L226 Difference]: Without dead ends: 98 [2021-11-25 18:52:21,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=152, Invalid=1329, Unknown=1, NotChecked=0, Total=1482 [2021-11-25 18:52:21,857 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:21,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 132 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 143 Invalid, 0 Unknown, 137 Unchecked, 0.3s Time] [2021-11-25 18:52:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-25 18:52:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2021-11-25 18:52:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 18:52:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-11-25 18:52:21,879 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 24 [2021-11-25 18:52:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:21,879 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-11-25 18:52:21,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:52:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-11-25 18:52:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:52:21,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:21,882 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:52:21,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:52:22,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:52:22,107 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:52:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1395275775, now seen corresponding path program 1 times [2021-11-25 18:52:22,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:22,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393004933] [2021-11-25 18:52:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:22,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:22,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:52:22,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741666291] [2021-11-25 18:52:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:22,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:52:22,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:52:22,127 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:52:22,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:52:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:22,348 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-25 18:52:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:52:22,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:52:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:22,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 18:52:22,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 18:52:22,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:52:22,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:52:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:22,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-11-25 18:52:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,062 INFO L354 Elim1Store]: treesize reduction 180, result has 38.6 percent of original size [2021-11-25 18:52:23,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 134 treesize of output 195 [2021-11-25 18:52:23,108 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:23,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:23,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:23,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 27 [2021-11-25 18:52:23,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:23,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 18 [2021-11-25 18:52:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2021-11-25 18:52:23,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:23,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2021-11-25 18:52:23,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:34,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:34,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:34,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:34,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:34,930 INFO L354 Elim1Store]: treesize reduction 1055, result has 15.7 percent of original size [2021-11-25 18:52:34,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 176 treesize of output 269 [2021-11-25 18:52:34,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:34,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:34,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:34,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:35,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 27 [2021-11-25 18:52:35,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:35,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2021-11-25 18:52:35,589 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:35,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:35,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2021-11-25 18:52:35,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2021-11-25 18:52:35,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:35,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:35,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 52 [2021-11-25 18:52:35,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:35,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:52:36,969 INFO L354 Elim1Store]: treesize reduction 76, result has 37.2 percent of original size [2021-11-25 18:52:36,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 165 treesize of output 117 [2021-11-25 18:52:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:52:37,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:52:54,844 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= 200 |c_ULTIMATE.start_main_~count~0#1|))) (let ((.cse38 (= (mod |c_ULTIMATE.start_main_~index~0#1| 2) 0)) (.cse20 (not .cse0))) (and (or (and (or .cse0 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse1 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse1 0) (<= c_~ARR_SIZE~0 .cse1) (= (let ((.cse5 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse6 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4)) (.cse7 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse4 (let ((.cse8 (let ((.cse10 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse10) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse5 .cse6) (* .cse7 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse2 (store (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse5 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse6) (* .cse7 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse3 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse19 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse14 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse15 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse13 (let ((.cse16 (let ((.cse18 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse18) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse18) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse14) (* .cse15 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse12 (store (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse14 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* .cse15 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse11 (select (store .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse12) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse11 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse12 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse12 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))))) 0) (<= c_~ARR_SIZE~0 .cse19) (< .cse19 0)))))) (or .cse20 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse21 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse21 0) (<= c_~ARR_SIZE~0 .cse21) (= (let ((.cse25 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse26 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4))) (let ((.cse24 (let ((.cse27 (let ((.cse29 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse29) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse28 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse28 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse29) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse27 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse27 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse25 .cse26) |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse22 (store (select .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse26) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse23 (select (store .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse22) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse22 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse22 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse23 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse23 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))))) 0) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse37 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse33 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8))) (let ((.cse32 (let ((.cse34 (let ((.cse36 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse36) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse36) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse34 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse34 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse33) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse31 (store (select .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse33 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse30 (select (store .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse31) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse30 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse31 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse31 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))))) 0) (<= c_~ARR_SIZE~0 .cse37) (< .cse37 0))))))) (not .cse38)) (or .cse38 (and (or .cse20 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse46 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse42 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8))) (let ((.cse41 (let ((.cse43 (let ((.cse45 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse45) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse45) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse42) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse40 (store (select .cse41 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse42 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse39 (select (store .cse41 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse40) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse39 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse39 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse40 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse40 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (<= c_~ARR_SIZE~0 .cse46) (< .cse46 0)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse47 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse47 0) (<= c_~ARR_SIZE~0 .cse47) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= (let ((.cse51 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse52 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4))) (let ((.cse50 (let ((.cse53 (let ((.cse55 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse55) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse54 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse54 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse55) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse53 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse53 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse51 .cse52) |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse49 (store (select .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse51 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse52) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse48 (select (store .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse49) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse48 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse48 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse49 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))))) (or (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse64 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse59 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse60 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse58 (let ((.cse61 (let ((.cse63 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse63) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse62 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse62 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse63) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse61 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse61 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse59) (* .cse60 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse56 (store (select .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse59 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* .cse60 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse57 (select (store .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse56) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse56 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse57 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse57 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse56 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (<= c_~ARR_SIZE~0 .cse64) (< .cse64 0)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse65 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse65 0) (<= c_~ARR_SIZE~0 .cse65) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|) (= (let ((.cse69 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse70 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4)) (.cse71 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse68 (let ((.cse72 (let ((.cse74 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse73 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse74) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse73 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse73 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse74) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse72 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse72 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse69 .cse70) (* .cse71 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse66 (store (select .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse70) (* .cse71 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse67 (select (store .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse66) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse66 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse67 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse67 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4))))))) 0))))) .cse0)))))) is different from true [2021-11-25 18:52:59,096 WARN L860 $PredicateComparison]: unable to prove that (or (<= c_~ARR_SIZE~0 |c_ULTIMATE.start_main_~index~0#1|) (< |c_ULTIMATE.start_main_~index~0#1| 0) (let ((.cse0 (= 200 |c_ULTIMATE.start_main_~count~0#1|))) (let ((.cse38 (= (mod |c_ULTIMATE.start_main_~index~0#1| 2) 0)) (.cse20 (not .cse0))) (and (or (and (or .cse0 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse1 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse1 0) (<= c_~ARR_SIZE~0 .cse1) (= (let ((.cse5 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse6 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4)) (.cse7 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse4 (let ((.cse8 (let ((.cse10 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse10) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse5 .cse6) (* .cse7 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse2 (store (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse5 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse6) (* .cse7 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse3 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse19 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse14 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse15 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse13 (let ((.cse16 (let ((.cse18 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse18) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse18) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse14) (* .cse15 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse12 (store (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse14 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* .cse15 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse11 (select (store .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse12) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse11 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse12 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse12 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))))) 0) (<= c_~ARR_SIZE~0 .cse19) (< .cse19 0)))))) (or .cse20 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse21 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse21 0) (<= c_~ARR_SIZE~0 .cse21) (= (let ((.cse25 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse26 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4))) (let ((.cse24 (let ((.cse27 (let ((.cse29 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse29) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse28 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse28 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse29) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse27 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse27 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse25 .cse26) |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse22 (store (select .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse26) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse23 (select (store .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse22) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse22 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse22 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse23 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse23 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))))) 0) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse37 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse33 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8))) (let ((.cse32 (let ((.cse34 (let ((.cse36 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse36) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse36) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse34 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse34 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse33) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse31 (store (select .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse33 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse30 (select (store .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse31) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse30 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse31 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse31 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))))) 0) (<= c_~ARR_SIZE~0 .cse37) (< .cse37 0))))))) (not .cse38)) (or .cse38 (and (or .cse20 (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse46 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse42 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8))) (let ((.cse41 (let ((.cse43 (let ((.cse45 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse45) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse45) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse42) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse40 (store (select .cse41 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse42 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse39 (select (store .cse41 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse40) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse39 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse39 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse40 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse40 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (<= c_~ARR_SIZE~0 .cse46) (< .cse46 0)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse47 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse47 0) (<= c_~ARR_SIZE~0 .cse47) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= (let ((.cse51 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse52 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4))) (let ((.cse50 (let ((.cse53 (let ((.cse55 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse55) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse54 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse54 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse55) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse53 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse53 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse51 .cse52) |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse49 (store (select .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse51 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse52) (* 1 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse48 (select (store .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse49) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse48 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse48 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse49 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|)))))) (or (and (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse64 (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (= (let ((.cse59 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse60 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse58 (let ((.cse61 (let ((.cse63 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse63) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse62 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse62 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse63) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse61 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse61 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse59) (* .cse60 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse56 (store (select .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse59 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* .cse60 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse57 (select (store .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse56) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse56 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse57 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse57 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse56 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))))) 0) (<= c_~ARR_SIZE~0 .cse64) (< .cse64 0)))) (forall ((|aux_div_ULTIMATE.start_main_#t~nondet6#1_42| Int) (|aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| Int)) (let ((.cse65 (+ (* 2 |aux_div_ULTIMATE.start_main_#t~nondet6#1_42|) |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|))) (or (< .cse65 0) (<= c_~ARR_SIZE~0 .cse65) (< |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (= |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 0) (<= 2 |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42|) (= (let ((.cse69 (* |aux_div_ULTIMATE.start_main_#t~nondet6#1_42| 8)) (.cse70 (* |aux_mod_ULTIMATE.start_main_#t~nondet6#1_42| 4)) (.cse71 (+ |c_ULTIMATE.start_main_~count~0#1| 1))) (let ((.cse68 (let ((.cse72 (let ((.cse74 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse73 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse74) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (store .cse73 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse73 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse74) (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (store .cse72 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse72 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse69 .cse70) (* .cse71 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse66 (store (select .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse70) (* .cse71 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse67 (select (store .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse66) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse66 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse67 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse67 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4))))))) 0))))) .cse0))))))) is different from true [2021-11-25 18:52:59,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:59,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393004933] [2021-11-25 18:52:59,099 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:52:59,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741666291] [2021-11-25 18:52:59,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741666291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:52:59,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [566670225] [2021-11-25 18:52:59,102 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:52:59,102 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:52:59,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:52:59,102 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:52:59,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:52:59,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,206 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:52:59,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:52:59,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 18:52:59,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:52:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:59,389 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:52:59,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:52:59,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:59,461 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:52:59,461 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 42 treesize of output 25 [2021-11-25 18:52:59,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:59,668 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:52:59,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:52:59,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:52:59,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 18:52:59,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-25 18:52:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-25 18:52:59,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:52:59,901 INFO L354 Elim1Store]: treesize reduction 39, result has 48.0 percent of original size [2021-11-25 18:52:59,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 116 [2021-11-25 18:52:59,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2021-11-25 18:52:59,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:52:59,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2021-11-25 18:52:59,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:52:59,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 6 [2021-11-25 18:52:59,991 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:00,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:00,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-25 18:53:00,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:00,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:00,158 INFO L354 Elim1Store]: treesize reduction 39, result has 48.0 percent of original size [2021-11-25 18:53:00,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 116 [2021-11-25 18:53:00,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:00,192 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:53:00,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 18:53:00,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:53:00,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:00,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 18:53:00,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2021-11-25 18:53:00,493 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:53:00,518 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:53:06,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3580#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:53:06,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:53:06,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:53:06,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-25 18:53:06,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83897778] [2021-11-25 18:53:06,300 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:53:06,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:53:06,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:53:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:53:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1304, Unknown=8, NotChecked=150, Total=1640 [2021-11-25 18:53:06,301 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:53:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:53:06,548 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2021-11-25 18:53:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 18:53:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-11-25 18:53:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:53:06,550 INFO L225 Difference]: With dead ends: 103 [2021-11-25 18:53:06,550 INFO L226 Difference]: Without dead ends: 96 [2021-11-25 18:53:06,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=178, Invalid=1304, Unknown=8, NotChecked=150, Total=1640 [2021-11-25 18:53:06,552 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:53:06,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 158 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 139 Unchecked, 0.2s Time] [2021-11-25 18:53:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-25 18:53:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-11-25 18:53:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 18:53:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2021-11-25 18:53:06,572 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 26 [2021-11-25 18:53:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:53:06,572 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2021-11-25 18:53:06,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:53:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2021-11-25 18:53:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:53:06,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:53:06,574 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:53:06,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:53:06,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:06,795 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:53:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:53:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -589321299, now seen corresponding path program 10 times [2021-11-25 18:53:06,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:53:06,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059184150] [2021-11-25 18:53:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:53:06,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:53:06,823 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:53:06,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342638318] [2021-11-25 18:53:06,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:53:06,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:06,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:53:06,832 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:53:06,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:53:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:53:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:53:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:53:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:53:07,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:53:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:53:07,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:53:07,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059184150] [2021-11-25 18:53:07,241 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:53:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342638318] [2021-11-25 18:53:07,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342638318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:53:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1274705939] [2021-11-25 18:53:07,243 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:53:07,243 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:53:07,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:53:07,244 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:53:07,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:53:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,361 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:53:07,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:53:07,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 18:53:07,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 18:53:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,593 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 18:53:07,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 399 treesize of output 397 [2021-11-25 18:53:07,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,698 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:53:07,698 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 42 treesize of output 25 [2021-11-25 18:53:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,787 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-25 18:53:07,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 18:53:07,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:07,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:07,834 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-11-25 18:53:07,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-11-25 18:53:07,949 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:53:07,975 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:53:10,268 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4057#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.offset|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= 0 |#NULL.offset|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2021-11-25 18:53:10,268 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:53:10,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:53:10,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-11-25 18:53:10,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785609612] [2021-11-25 18:53:10,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:53:10,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 18:53:10,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:53:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 18:53:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:53:10,270 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:53:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:53:11,000 INFO L93 Difference]: Finished difference Result 221 states and 261 transitions. [2021-11-25 18:53:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 18:53:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-25 18:53:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:53:11,004 INFO L225 Difference]: With dead ends: 221 [2021-11-25 18:53:11,004 INFO L226 Difference]: Without dead ends: 211 [2021-11-25 18:53:11,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=341, Invalid=1639, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 18:53:11,006 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 224 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:53:11,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 135 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:53:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-25 18:53:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 103. [2021-11-25 18:53:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 77 states have internal predecessors, (90), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 18:53:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-11-25 18:53:11,041 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 25 [2021-11-25 18:53:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:53:11,043 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-11-25 18:53:11,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:53:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-11-25 18:53:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:53:11,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:53:11,048 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:53:11,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:53:11,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:53:11,285 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:53:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:53:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash -591132176, now seen corresponding path program 11 times [2021-11-25 18:53:11,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:53:11,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920577500] [2021-11-25 18:53:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:53:11,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:53:11,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:53:11,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039088175] [2021-11-25 18:53:11,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:53:11,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:11,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:53:11,327 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:53:11,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:53:11,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:53:11,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:53:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:53:11,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:53:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:53:11,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:53:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:53:11,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:53:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920577500] [2021-11-25 18:53:11,876 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:53:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039088175] [2021-11-25 18:53:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039088175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:53:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2084617491] [2021-11-25 18:53:11,878 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:53:11,878 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:53:11,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:53:11,879 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:53:11,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:53:11,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,011 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 18:53:12,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 18:53:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,100 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:53:12,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:53:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:53:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:12,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:12,276 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:53:12,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:53:12,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:12,369 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:53:12,369 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 42 treesize of output 25 [2021-11-25 18:53:12,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:12,674 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:53:12,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:53:12,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:12,729 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:53:12,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2021-11-25 18:53:12,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:53:12,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-25 18:53:12,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:12,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-25 18:53:13,009 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 18:53:13,011 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:53:15,478 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4751#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:53:15,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:53:15,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:53:15,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-11-25 18:53:15,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365762746] [2021-11-25 18:53:15,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 18:53:15,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 18:53:15,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:53:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 18:53:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:53:15,480 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:53:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:53:15,907 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2021-11-25 18:53:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:53:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-25 18:53:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:53:15,909 INFO L225 Difference]: With dead ends: 147 [2021-11-25 18:53:15,909 INFO L226 Difference]: Without dead ends: 144 [2021-11-25 18:53:15,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:53:15,911 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 76 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:53:15,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 153 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:53:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-25 18:53:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 97. [2021-11-25 18:53:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 73 states have internal predecessors, (85), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 18:53:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2021-11-25 18:53:15,933 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 25 [2021-11-25 18:53:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:53:15,934 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2021-11-25 18:53:15,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:53:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2021-11-25 18:53:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:53:15,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:53:15,935 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:53:15,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:53:16,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 18:53:16,159 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:53:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:53:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1145465632, now seen corresponding path program 12 times [2021-11-25 18:53:16,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:53:16,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961541189] [2021-11-25 18:53:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:53:16,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:53:16,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:53:16,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76544811] [2021-11-25 18:53:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:53:16,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:53:16,187 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:53:16,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 18:53:16,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:53:16,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:53:16,383 WARN L261 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-25 18:53:16,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:53:16,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:53:16,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-11-25 18:53:16,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-25 18:53:16,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-25 18:53:16,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2021-11-25 18:53:16,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2021-11-25 18:53:16,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2021-11-25 18:53:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:16,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 111 [2021-11-25 18:53:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,722 INFO L354 Elim1Store]: treesize reduction 456, result has 39.1 percent of original size [2021-11-25 18:53:17,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 22 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 20 case distinctions, treesize of input 179 treesize of output 387 [2021-11-25 18:53:17,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 33 [2021-11-25 18:53:17,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:17,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:17,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:17,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:17,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 81 [2021-11-25 18:53:18,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 33 [2021-11-25 18:53:18,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:18,525 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:18,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:18,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 36 [2021-11-25 18:53:18,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:18,949 INFO L354 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2021-11-25 18:53:18,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 27 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 69 [2021-11-25 18:53:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:19,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:19,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 63 [2021-11-25 18:53:19,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:19,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:19,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:19,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 33 [2021-11-25 18:53:19,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:19,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 33 [2021-11-25 18:53:19,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:24,335 INFO L354 Elim1Store]: treesize reduction 184, result has 36.3 percent of original size [2021-11-25 18:53:24,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 440 treesize of output 284 [2021-11-25 18:53:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:53:25,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:53:44,165 WARN L227 SmtUtils]: Spent 10.08s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:53:44,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:53:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961541189] [2021-11-25 18:53:44,166 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:53:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76544811] [2021-11-25 18:53:44,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76544811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:53:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371448866] [2021-11-25 18:53:44,168 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:53:44,168 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:53:44,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:53:44,168 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:53:44,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:53:44,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,283 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 18:53:44,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 18:53:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 18:53:44,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 18:53:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:44,470 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 18:53:44,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 406 treesize of output 392 [2021-11-25 18:53:44,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:44,548 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 18:53:44,548 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 42 treesize of output 25 [2021-11-25 18:53:44,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:44,740 INFO L354 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2021-11-25 18:53:44,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 126 [2021-11-25 18:53:44,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-25 18:53:44,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-25 18:53:44,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:53:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:44,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-25 18:53:45,049 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 18:53:45,074 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:53:48,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5290#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:53:48,646 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:53:48,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:53:48,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-25 18:53:48,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438599021] [2021-11-25 18:53:48,646 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:53:48,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:53:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:53:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:53:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1449, Unknown=2, NotChecked=0, Total=1640 [2021-11-25 18:53:48,648 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:53:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:53:49,099 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-11-25 18:53:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 18:53:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-11-25 18:53:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:53:49,119 INFO L225 Difference]: With dead ends: 119 [2021-11-25 18:53:49,119 INFO L226 Difference]: Without dead ends: 116 [2021-11-25 18:53:49,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=193, Invalid=1527, Unknown=2, NotChecked=0, Total=1722 [2021-11-25 18:53:49,121 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:53:49,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 189 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 193 Invalid, 0 Unknown, 247 Unchecked, 0.4s Time] [2021-11-25 18:53:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-25 18:53:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2021-11-25 18:53:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 18:53:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-11-25 18:53:49,148 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 26 [2021-11-25 18:53:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:53:49,149 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-11-25 18:53:49,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:53:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-11-25 18:53:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:53:49,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:53:49,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:53:49,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:53:49,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:49,371 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:53:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:53:49,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1575120604, now seen corresponding path program 2 times [2021-11-25 18:53:49,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:53:49,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118261381] [2021-11-25 18:53:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:53:49,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:53:49,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:53:49,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948952963] [2021-11-25 18:53:49,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:53:49,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:49,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:53:49,388 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:53:49,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:53:49,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:53:49,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:53:49,687 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-25 18:53:49,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:53:49,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:53:49,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 18:53:49,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 18:53:49,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:53:49,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:53:49,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 18:53:49,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-25 18:53:49,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 18:53:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 18:53:49,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-11-25 18:53:49,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-11-25 18:53:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,889 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-11-25 18:53:49,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2021-11-25 18:53:49,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:49,928 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-11-25 18:53:49,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2021-11-25 18:53:53,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:53,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 123 [2021-11-25 18:53:53,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 90 [2021-11-25 18:53:53,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 84 [2021-11-25 18:53:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:53,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:53,457 INFO L354 Elim1Store]: treesize reduction 175, result has 35.2 percent of original size [2021-11-25 18:53:53,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 129 [2021-11-25 18:53:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:53,569 INFO L354 Elim1Store]: treesize reduction 175, result has 35.2 percent of original size [2021-11-25 18:53:53,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 129 [2021-11-25 18:53:53,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:53,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:54,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:54,217 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:54,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,338 INFO L354 Elim1Store]: treesize reduction 23, result has 20.7 percent of original size [2021-11-25 18:53:54,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 33 [2021-11-25 18:53:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,593 INFO L354 Elim1Store]: treesize reduction 83, result has 6.7 percent of original size [2021-11-25 18:53:54,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 39 [2021-11-25 18:53:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:54,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:54,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:54,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:54,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 27 [2021-11-25 18:53:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:53:55,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2021-11-25 18:53:55,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,257 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-11-25 18:53:55,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 29 [2021-11-25 18:53:55,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2021-11-25 18:53:55,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:55,939 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-11-25 18:53:55,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 61 [2021-11-25 18:53:56,020 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:56,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 55 [2021-11-25 18:53:56,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:53:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2021-11-25 18:53:56,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:57,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:53:57,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:54:34,831 INFO L354 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2021-11-25 18:54:34,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 593 treesize of output 499 [2021-11-25 18:54:34,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:54:34,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118261381] [2021-11-25 18:54:34,838 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:54:34,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948952963] [2021-11-25 18:54:34,838 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 18:54:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178728094] [2021-11-25 18:54:34,840 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:54:34,840 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:54:34,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:54:34,841 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:54:34,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:54:34,877 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@78734312 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:401) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:54:34,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:34,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-25 18:54:34,879 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-25 18:54:34,879 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-25 18:54:34,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:54:34,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:35,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:54:35,095 INFO L732 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1] [2021-11-25 18:54:35,097 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:54:35,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:54:35 BoogieIcfgContainer [2021-11-25 18:54:35,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:54:35,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:54:35,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:54:35,116 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:54:35,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:50:53" (3/4) ... [2021-11-25 18:54:35,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:54:35,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:54:35,120 INFO L158 Benchmark]: Toolchain (without parser) took 222922.07ms. Allocated memory was 92.3MB in the beginning and 192.9MB in the end (delta: 100.7MB). Free memory was 52.4MB in the beginning and 103.2MB in the end (delta: -50.8MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,120 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 69.4MB in the end (delta: 50.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.67ms. Allocated memory is still 92.3MB. Free memory was 52.2MB in the beginning and 67.1MB in the end (delta: -14.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.90ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 65.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:35,126 INFO L158 Benchmark]: Boogie Preprocessor took 30.91ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 64.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,128 INFO L158 Benchmark]: RCFGBuilder took 480.51ms. Allocated memory is still 92.3MB. Free memory was 64.2MB in the beginning and 51.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,129 INFO L158 Benchmark]: TraceAbstraction took 222025.69ms. Allocated memory was 92.3MB in the beginning and 192.9MB in the end (delta: 100.7MB). Free memory was 50.9MB in the beginning and 104.3MB in the end (delta: -53.3MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,129 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 192.9MB. Free memory was 104.3MB in the beginning and 103.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:35,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 69.4MB in the end (delta: 50.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.67ms. Allocated memory is still 92.3MB. Free memory was 52.2MB in the beginning and 67.1MB in the end (delta: -14.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.90ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 65.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.91ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 64.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.51ms. Allocated memory is still 92.3MB. Free memory was 64.2MB in the beginning and 51.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 222025.69ms. Allocated memory was 92.3MB in the beginning and 192.9MB in the end (delta: 100.7MB). Free memory was 50.9MB in the beginning and 104.3MB in the end (delta: -53.3MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 192.9MB. Free memory was 104.3MB in the beginning and 103.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L45] signed long long ARR_SIZE ; [L49] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L50] CALL assume_abort_if_not(ARR_SIZE > 0) [L39] COND FALSE !(!cond) [L50] RET assume_abort_if_not(ARR_SIZE > 0) [L52] int array1[ARR_SIZE] ; [L53] int array2[ARR_SIZE] ; [L54] int count = 0, num = -1 ; [L55] signed long long sum = 0 ; [L56] int temp ; [L57] short index ; [L59] count=0 [L59] COND TRUE count=0 && index < ARR_SIZE) [L39] COND FALSE !(!cond) [L71] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L74] COND FALSE !(index % 2 == 0) [L79] array1[index] = num * count [L80] array2[index] = num * (num * count) [L83] COND TRUE count == 200 [L84] count = 0 [L85] count++ [L87] temp = __VERIFIER_nondet_int() [L88] COND FALSE !(temp == 0) [L67] COND TRUE 1 [L70] index = __VERIFIER_nondet_short() [L71] CALL assume_abort_if_not(index>=0 && index < ARR_SIZE) [L39] COND FALSE !(!cond) [L71] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L74] COND FALSE !(index % 2 == 0) [L79] array1[index] = num * count [L80] array2[index] = num * (num * count) [L83] COND TRUE count == 200 [L84] count = 0 [L85] count++ [L87] temp = __VERIFIER_nondet_int() [L88] COND TRUE temp == 0 [L91] count=0 [L91] COND TRUE count main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/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 -> 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 [2021-11-25 18:54:38,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:54:38,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:54:38,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:54:38,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:54:38,163 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:54:38,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array5_pattern.c [2021-11-25 18:54:38,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/9693194b6/9e3cf32a2a834cd0a92fa8dc026f3e3f/FLAG80b16d089 [2021-11-25 18:54:38,804 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:54:38,806 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c [2021-11-25 18:54:38,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/9693194b6/9e3cf32a2a834cd0a92fa8dc026f3e3f/FLAG80b16d089 [2021-11-25 18:54:39,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/data/9693194b6/9e3cf32a2a834cd0a92fa8dc026f3e3f [2021-11-25 18:54:39,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:54:39,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:54:39,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:39,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:54:39,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:54:39,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8e4374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39, skipping insertion in model container [2021-11-25 18:54:39,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:54:39,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:54:39,353 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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-11-25 18:54:39,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:39,398 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:54:39,411 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_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-11-25 18:54:39,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:39,492 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:54:39,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39 WrapperNode [2021-11-25 18:54:39,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:39,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:39,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:54:39,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:54:39,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,545 INFO L137 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2021-11-25 18:54:39,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:39,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:54:39,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:54:39,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:54:39,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:54:39,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:54:39,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:54:39,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:54:39,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (1/1) ... [2021-11-25 18:54:39,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:39,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:54:39,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:54:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:54:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:54:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:54:39,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:54:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:54:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:54:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:54:39,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:54:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:54:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:54:39,770 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:54:39,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:54:40,116 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:54:40,123 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:54:40,123 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:54:40,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:40 BoogieIcfgContainer [2021-11-25 18:54:40,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:54:40,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:54:40,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:54:40,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:54:40,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:54:39" (1/3) ... [2021-11-25 18:54:40,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@890372d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:40, skipping insertion in model container [2021-11-25 18:54:40,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:39" (2/3) ... [2021-11-25 18:54:40,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@890372d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:40, skipping insertion in model container [2021-11-25 18:54:40,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:40" (3/3) ... [2021-11-25 18:54:40,134 INFO L111 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2021-11-25 18:54:40,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:54:40,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:54:40,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:54:40,197 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 18:54:40,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:54:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:54:40,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:40,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:40,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1359011546, now seen corresponding path program 1 times [2021-11-25 18:54:40,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:40,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444185477] [2021-11-25 18:54:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:40,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:40,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:40,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:40,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:54:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:40,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:54:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:40,439 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 18:54:40,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:40,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:40,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444185477] [2021-11-25 18:54:40,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444185477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:40,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:40,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:54:40,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725382842] [2021-11-25 18:54:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:40,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:54:40,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:54:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:40,492 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:54:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:40,517 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2021-11-25 18:54:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:54:40,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-25 18:54:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:40,527 INFO L225 Difference]: With dead ends: 53 [2021-11-25 18:54:40,527 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 18:54:40,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:40,536 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:40,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:54:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 18:54:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 18:54:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-11-25 18:54:40,583 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2021-11-25 18:54:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:40,584 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-11-25 18:54:40,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:54:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-11-25 18:54:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:54:40,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:40,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:40,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:40,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:40,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1765206397, now seen corresponding path program 1 times [2021-11-25 18:54:40,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658006702] [2021-11-25 18:54:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:40,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:40,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:40,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:54:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:40,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:54:40,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:54:41,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:41,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:41,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658006702] [2021-11-25 18:54:41,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658006702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:41,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:41,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:54:41,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536580732] [2021-11-25 18:54:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:41,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:54:41,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:54:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:54:41,015 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:41,220 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2021-11-25 18:54:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:54:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-25 18:54:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:41,222 INFO L225 Difference]: With dead ends: 46 [2021-11-25 18:54:41,222 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 18:54:41,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 18:54:41,225 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:41,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:54:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 18:54:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-25 18:54:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:54:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-25 18:54:41,234 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 25 [2021-11-25 18:54:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:41,235 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-25 18:54:41,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-25 18:54:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:54:41,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:41,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:41,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:41,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:41,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 955859771, now seen corresponding path program 1 times [2021-11-25 18:54:41,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:41,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214040789] [2021-11-25 18:54:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:41,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:41,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:41,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:54:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:41,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:54:41,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:54:41,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:41,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:41,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214040789] [2021-11-25 18:54:41,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214040789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:41,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:41,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:54:41,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100209108] [2021-11-25 18:54:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:41,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:54:41,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:54:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:54:41,693 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:41,750 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-11-25 18:54:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:54:41,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-25 18:54:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:41,752 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:54:41,752 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 18:54:41,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:54:41,754 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:41,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:54:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 18:54:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-25 18:54:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:54:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-11-25 18:54:41,762 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 25 [2021-11-25 18:54:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:41,763 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-11-25 18:54:41,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-25 18:54:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:54:41,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:41,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:41,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:41,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:41,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash -488527555, now seen corresponding path program 1 times [2021-11-25 18:54:41,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:41,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698376137] [2021-11-25 18:54:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:41,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:41,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:41,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:41,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:54:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:54:42,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:54:42,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:42,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:42,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698376137] [2021-11-25 18:54:42,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698376137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:42,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:42,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:54:42,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965470583] [2021-11-25 18:54:42,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:42,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:54:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:54:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:54:42,445 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:42,459 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2021-11-25 18:54:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:54:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-25 18:54:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:42,460 INFO L225 Difference]: With dead ends: 57 [2021-11-25 18:54:42,460 INFO L226 Difference]: Without dead ends: 34 [2021-11-25 18:54:42,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:54:42,462 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:42,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2021-11-25 18:54:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-25 18:54:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-25 18:54:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:54:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-11-25 18:54:42,476 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 27 [2021-11-25 18:54:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:42,477 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-11-25 18:54:42,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:54:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-11-25 18:54:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 18:54:42,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:42,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:42,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-25 18:54:42,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:42,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash -309168389, now seen corresponding path program 1 times [2021-11-25 18:54:42,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:42,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467377917] [2021-11-25 18:54:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:42,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:42,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:42,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:54:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 18:54:42,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:54:43,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:54:43,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467377917] [2021-11-25 18:54:43,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467377917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:54:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350916837] [2021-11-25 18:54:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:43,633 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:54:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:54:43,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:54:43,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-25 18:54:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:43,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 18:54:43,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:54:44,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:54:44,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350916837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:54:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483881081] [2021-11-25 18:54:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:44,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:54:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:44,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:54:44,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:54:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:44,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:54:44,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:54:44,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:54:44,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483881081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:54:44,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:54:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 16 [2021-11-25 18:54:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624035836] [2021-11-25 18:54:44,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:54:44,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:54:44,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:54:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:54:44,743 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 18:54:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:45,180 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2021-11-25 18:54:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:54:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-11-25 18:54:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:45,183 INFO L225 Difference]: With dead ends: 90 [2021-11-25 18:54:45,183 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 18:54:45,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:54:45,185 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:45,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 117 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2021-11-25 18:54:45,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 18:54:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2021-11-25 18:54:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 18:54:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-11-25 18:54:45,197 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 29 [2021-11-25 18:54:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:45,197 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-11-25 18:54:45,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 18:54:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-11-25 18:54:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 18:54:45,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:45,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:45,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:45,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-25 18:54:45,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 18:54:45,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:54:45,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1010232967, now seen corresponding path program 1 times [2021-11-25 18:54:45,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:45,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708821775] [2021-11-25 18:54:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:45,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:45,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:45,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03784f66-ad4e-4cb3-8b10-3fc9e5ca5172/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:54:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:45,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 18:54:45,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:46,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-25 18:54:46,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:46,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-11-25 18:54:46,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-25 18:54:46,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-25 18:54:47,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-25 18:54:47,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:54:47,418 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 18:54:47,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2021-11-25 18:54:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:47,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:54:48,569 INFO L354 Elim1Store]: treesize reduction 21, result has 63.8 percent of original size [2021-11-25 18:54:48,569 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 128 [2021-11-25 18:54:48,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:54:48,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 186 [2021-11-25 18:54:49,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:54:49,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 209 [2021-11-25 18:55:37,169 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-25 18:55:37,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 113 [2021-11-25 18:55:41,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2021-11-25 18:55:44,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:55:44,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 112