./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE --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 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:17:25,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:17:25,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:17:25,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:17:25,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:17:25,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:17:25,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:17:25,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:17:25,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:17:25,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:17:25,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:17:25,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:17:25,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:17:25,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:17:25,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:17:25,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:17:25,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:17:25,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:17:25,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:17:25,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:17:25,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:17:25,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:17:25,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:17:25,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:17:25,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:17:25,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:17:25,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:17:25,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:17:25,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:17:25,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:17:25,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:17:25,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:17:25,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:17:25,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:17:25,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:17:25,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:17:25,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:17:25,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:17:25,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:17:25,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:17:25,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:17:25,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:17:25,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:17:25,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:17:25,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:17:25,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:17:25,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:17:25,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:17:25,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:17:25,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:17:25,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:17:25,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:17:25,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:17:25,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:17:25,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:17:25,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:17:25,675 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:17:25,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:17:25,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:17:25,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:17:25,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:17:25,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:17:25,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:17:25,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:17:25,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:17:25,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:17:25,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:17:25,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:17:25,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:17:25,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:17:25,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:17:25,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:17:25,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:17:25,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:17:25,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:17:25,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:17:25,681 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:17:25,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:17:25,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:17:25,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:17:25,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:17:25,683 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_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 [2021-10-24 11:17:26,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:17:26,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:17:26,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:17:26,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:17:26,038 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:17:26,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-24 11:17:26,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/data/21027d558/bf7023f8db0e4d1eba62ae15e4f9be7d/FLAGabf242011 [2021-10-24 11:17:26,708 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:17:26,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-24 11:17:26,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/data/21027d558/bf7023f8db0e4d1eba62ae15e4f9be7d/FLAGabf242011 [2021-10-24 11:17:27,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/data/21027d558/bf7023f8db0e4d1eba62ae15e4f9be7d [2021-10-24 11:17:27,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:17:27,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:17:27,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:17:27,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:17:27,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:17:27,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3183c82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27, skipping insertion in model container [2021-10-24 11:17:27,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:17:27,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:17:27,349 WARN L228 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_46ae69db-d48d-454a-b6a8-e916cc571a26/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-24 11:17:27,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:17:27,375 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:17:27,398 WARN L228 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_46ae69db-d48d-454a-b6a8-e916cc571a26/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-24 11:17:27,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:17:27,422 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:17:27,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27 WrapperNode [2021-10-24 11:17:27,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:17:27,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:17:27,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:17:27,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:17:27,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:17:27,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:17:27,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:17:27,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:17:27,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:17:27,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:17:27,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:17:27,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:17:27,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2021-10-24 11:17:27,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:17:27,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:17:27,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:17:27,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:17:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:17:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:17:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:17:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:17:28,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:17:28,166 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 11:17:28,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28 BoogieIcfgContainer [2021-10-24 11:17:28,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:17:28,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:17:28,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:17:28,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:17:28,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:27" (1/3) ... [2021-10-24 11:17:28,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6ca093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:28, skipping insertion in model container [2021-10-24 11:17:28,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (2/3) ... [2021-10-24 11:17:28,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6ca093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:28, skipping insertion in model container [2021-10-24 11:17:28,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28" (3/3) ... [2021-10-24 11:17:28,182 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2021-10-24 11:17:28,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:17:28,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:17:28,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:17:28,290 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 [2021-10-24 11:17:28,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:17:28,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 11:17:28,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:17:28,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:17:28,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:17:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:17:28,323 INFO L82 PathProgramCache]: Analyzing trace with hash -255100683, now seen corresponding path program 1 times [2021-10-24 11:17:28,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:17:28,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301333323] [2021-10-24 11:17:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:28,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:17:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:28,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:17:28,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301333323] [2021-10-24 11:17:28,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301333323] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:17:28,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:17:28,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-24 11:17:28,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351582474] [2021-10-24 11:17:28,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 11:17:28,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:17:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 11:17:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-24 11:17:28,860 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:17:29,006 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2021-10-24 11:17:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 11:17:29,009 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 11:17:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:17:29,020 INFO L225 Difference]: With dead ends: 22 [2021-10-24 11:17:29,021 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 11:17:29,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-24 11:17:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 11:17:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 11:17:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-24 11:17:29,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-10-24 11:17:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:17:29,065 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-24 11:17:29,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-24 11:17:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 11:17:29,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:17:29,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:17:29,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:17:29,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:17:29,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:17:29,069 INFO L82 PathProgramCache]: Analyzing trace with hash 683478881, now seen corresponding path program 1 times [2021-10-24 11:17:29,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:17:29,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099411548] [2021-10-24 11:17:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:29,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:17:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:29,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:17:29,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099411548] [2021-10-24 11:17:29,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099411548] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:17:29,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134779716] [2021-10-24 11:17:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:29,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:17:29,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:17:29,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:17:29,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:17:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:29,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 11:17:29,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:17:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:29,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:17:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:30,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134779716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:17:30,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1599272603] [2021-10-24 11:17:30,625 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 11:17:30,625 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:17:30,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:17:30,638 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:17:30,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:17:30,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:30,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:17:30,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:30,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:17:30,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 11:17:30,717 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-24 11:17:30,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:17:30,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:30,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:30,769 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:30,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:30,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:30,875 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 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:17:30,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:30,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:30,887 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:30,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:30,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:30,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:30,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:17:30,928 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-10-24 11:17:30,939 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:30,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:30,957 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:30,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:30,974 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:30,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:30,986 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:30,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,011 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,027 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,046 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,064 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,079 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,096 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:31,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:31,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:31,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:31,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:31,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-24 11:17:31,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:17:31,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,452 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:17:31,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:17:31,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:31,509 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-10-24 11:17:31,511 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:31,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:31,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 11:17:31,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:17:31,537 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:17:33,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:17:33,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:17:33,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-10-24 11:17:33,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902484379] [2021-10-24 11:17:33,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-24 11:17:33,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:17:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-24 11:17:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=842, Unknown=0, NotChecked=0, Total=1332 [2021-10-24 11:17:33,265 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:17:33,355 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-10-24 11:17:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-24 11:17:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 11:17:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:17:33,357 INFO L225 Difference]: With dead ends: 30 [2021-10-24 11:17:33,357 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 11:17:33,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2076.3ms TimeCoverageRelationStatistics Valid=490, Invalid=842, Unknown=0, NotChecked=0, Total=1332 [2021-10-24 11:17:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 11:17:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 11:17:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-24 11:17:33,365 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-10-24 11:17:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:17:33,365 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-24 11:17:33,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-24 11:17:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 11:17:33,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:17:33,367 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:17:33,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:17:33,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 11:17:33,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:17:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:17:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash -972358047, now seen corresponding path program 2 times [2021-10-24 11:17:33,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:17:33,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376050443] [2021-10-24 11:17:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:33,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:17:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:34,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:17:34,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376050443] [2021-10-24 11:17:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376050443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:17:34,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401602778] [2021-10-24 11:17:34,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 11:17:34,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:17:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:17:34,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:17:34,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:17:34,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-24 11:17:34,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:17:34,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-24 11:17:34,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:17:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:34,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:17:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:35,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401602778] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:17:35,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [220042687] [2021-10-24 11:17:35,913 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 11:17:35,913 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:17:35,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:17:35,915 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:17:35,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:17:35,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:35,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:17:35,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:35,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:17:35,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 11:17:35,949 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-24 11:17:35,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:17:35,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:35,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:35,971 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:35,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:35,979 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:35,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:36,016 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 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:17:36,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:36,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:36,022 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:36,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,034 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:17:36,035 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-10-24 11:17:36,040 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,061 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,069 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,076 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,083 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,090 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,098 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,106 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,117 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,124 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:36,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:36,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:36,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 450 [2021-10-24 11:17:36,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 504 [2021-10-24 11:17:36,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,391 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.1 percent of original size [2021-10-24 11:17:36,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:36,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:17:36,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-24 11:17:36,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:36,441 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-10-24 11:17:36,444 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:36,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:36,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 11:17:36,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:17:36,460 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:17:38,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:17:38,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:17:38,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-10-24 11:17:38,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547500487] [2021-10-24 11:17:38,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-24 11:17:38,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:17:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-24 11:17:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1582, Invalid=2078, Unknown=0, NotChecked=0, Total=3660 [2021-10-24 11:17:38,042 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:17:38,213 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2021-10-24 11:17:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-24 11:17:38,215 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-24 11:17:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:17:38,216 INFO L225 Difference]: With dead ends: 54 [2021-10-24 11:17:38,217 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 11:17:38,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 2659.2ms TimeCoverageRelationStatistics Valid=1582, Invalid=2078, Unknown=0, NotChecked=0, Total=3660 [2021-10-24 11:17:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 11:17:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-24 11:17:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-24 11:17:38,233 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-10-24 11:17:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:17:38,233 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-24 11:17:38,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-24 11:17:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-24 11:17:38,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:17:38,241 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:17:38,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:17:38,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:17:38,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:17:38,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:17:38,467 INFO L82 PathProgramCache]: Analyzing trace with hash 152788065, now seen corresponding path program 3 times [2021-10-24 11:17:38,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:17:38,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700285539] [2021-10-24 11:17:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:38,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:17:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:39,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:17:39,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700285539] [2021-10-24 11:17:39,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700285539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:17:39,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903421173] [2021-10-24 11:17:39,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 11:17:39,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:17:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:17:39,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:17:39,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 11:17:39,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 11:17:39,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:17:39,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-24 11:17:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:17:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:40,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:17:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903421173] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:17:44,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758550894] [2021-10-24 11:17:44,777 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 11:17:44,777 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:17:44,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:17:44,778 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:17:44,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:17:44,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,795 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:44,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:17:44,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:44,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:17:44,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 11:17:44,807 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-10-24 11:17:44,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:17:44,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:44,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:17:44,823 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:44,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:44,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:17:44,854 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 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:17:44,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:44,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:17:44,861 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:17:44,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:44,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:44,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,870 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:17:44,870 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-10-24 11:17:44,875 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,884 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,891 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,901 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,908 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,915 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,924 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,931 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,941 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,947 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:17:44,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:17:44,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:44,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:44,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:45,023 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:45,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:45,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-24 11:17:45,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:17:45,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,117 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:17:45,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:17:45,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:17:45,152 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-10-24 11:17:45,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:17:45,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:17:45,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 11:17:45,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:17:45,167 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:17:46,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:17:46,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:17:46,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2021-10-24 11:17:46,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441223799] [2021-10-24 11:17:46,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-24 11:17:46,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:17:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-24 11:17:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5494, Invalid=6278, Unknown=0, NotChecked=0, Total=11772 [2021-10-24 11:17:46,668 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:17:47,063 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-10-24 11:17:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-24 11:17:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-24 11:17:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:17:47,066 INFO L225 Difference]: With dead ends: 102 [2021-10-24 11:17:47,067 INFO L226 Difference]: Without dead ends: 99 [2021-10-24 11:17:47,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 5514.6ms TimeCoverageRelationStatistics Valid=5494, Invalid=6278, Unknown=0, NotChecked=0, Total=11772 [2021-10-24 11:17:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-24 11:17:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-24 11:17:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-10-24 11:17:47,099 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2021-10-24 11:17:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:17:47,100 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-10-24 11:17:47,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:17:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-10-24 11:17:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-24 11:17:47,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:17:47,108 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:17:47,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-24 11:17:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-24 11:17:47,314 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:17:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:17:47,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1108220001, now seen corresponding path program 4 times [2021-10-24 11:17:47,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:17:47,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577067412] [2021-10-24 11:17:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:17:47,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:17:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:52,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:17:52,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577067412] [2021-10-24 11:17:52,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577067412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:17:52,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104947686] [2021-10-24 11:17:52,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-24 11:17:52,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:17:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:17:52,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:17:52,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 11:17:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:17:53,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-24 11:17:53,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:17:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:17:54,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:18:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:18:07,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104947686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:18:07,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928616241] [2021-10-24 11:18:07,099 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 11:18:07,099 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:18:07,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:18:07,100 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:18:07,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:18:07,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:18:07,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:18:07,119 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:18:07,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:18:07,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 11:18:07,125 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-10-24 11:18:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:18:07,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:18:07,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:18:07,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:18:07,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:18:07,165 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 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:18:07,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:18:07,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:18:07,170 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:18:07,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,175 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,179 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:18:07,179 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-10-24 11:18:07,184 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,191 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,198 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,205 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,213 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,220 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,227 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,234 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,250 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,256 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:18:07,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:18:07,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:18:07,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-24 11:18:07,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:18:07,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,392 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:18:07,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:18:07,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:07,422 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-10-24 11:18:07,424 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:18:07,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:18:07,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 11:18:07,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:18:07,437 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:18:11,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:18:11,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:18:11,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-10-24 11:18:11,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609162393] [2021-10-24 11:18:11,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-10-24 11:18:11,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-10-24 11:18:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-10-24 11:18:11,282 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:18:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:13,918 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-10-24 11:18:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-24 11:18:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-24 11:18:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:13,922 INFO L225 Difference]: With dead ends: 108 [2021-10-24 11:18:13,922 INFO L226 Difference]: Without dead ends: 105 [2021-10-24 11:18:13,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7241 ImplicationChecksByTransitivity, 18421.4ms TimeCoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-10-24 11:18:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-24 11:18:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-10-24 11:18:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 104 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:18:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-10-24 11:18:13,942 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-10-24 11:18:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:13,943 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-10-24 11:18:13,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:18:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-10-24 11:18:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-24 11:18:13,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:13,949 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:18:13,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:18:14,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-24 11:18:14,158 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash 947134433, now seen corresponding path program 5 times [2021-10-24 11:18:14,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:14,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268886447] [2021-10-24 11:18:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:14,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:18:21,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:21,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268886447] [2021-10-24 11:18:21,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268886447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:18:21,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672276889] [2021-10-24 11:18:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 11:18:21,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:18:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:18:21,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:18:21,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 11:18:21,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-10-24 11:18:21,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:18:21,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-24 11:18:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:18:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:18:29,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:21:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:21:04,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672276889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:21:04,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1231061109] [2021-10-24 11:21:04,132 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 11:21:04,133 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:21:04,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:21:04,133 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:21:04,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:21:04,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,144 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:21:04,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:21:04,145 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:21:04,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:21:04,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 11:21:04,149 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 11:21:04,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:21:04,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:21:04,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:21:04,160 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:21:04,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:21:04,202 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 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:21:04,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:21:04,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:21:04,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:21:04,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,211 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:21:04,214 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-10-24 11:21:04,218 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,226 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,232 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,244 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,250 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,256 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,266 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,270 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,276 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,279 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 11:21:04,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 11:21:04,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,330 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:21:04,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-10-24 11:21:04,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:21:04,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,406 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:21:04,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:21:04,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:04,434 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-10-24 11:21:04,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:21:04,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:21:04,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 11:21:04,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:21:04,447 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:21:09,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:21:09,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:21:09,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 256 [2021-10-24 11:21:09,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440838584] [2021-10-24 11:21:09,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2021-10-24 11:21:09,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:21:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2021-10-24 11:21:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=65418, Unknown=0, NotChecked=0, Total=72092 [2021-10-24 11:21:09,099 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:21:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:21:24,183 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-10-24 11:21:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-24 11:21:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-24 11:21:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:21:24,184 INFO L225 Difference]: With dead ends: 107 [2021-10-24 11:21:24,185 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:21:24,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14553 ImplicationChecksByTransitivity, 73962.4ms TimeCoverageRelationStatistics Valid=6681, Invalid=65949, Unknown=0, NotChecked=0, Total=72630 [2021-10-24 11:21:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:21:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:21:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:21:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:21:24,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2021-10-24 11:21:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:21:24,190 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:21:24,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:21:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:21:24,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:21:24,194 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:21:24,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:21:24,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:21:24,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 11:21:24,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:24,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:21:26,977 INFO L853 garLoopResultBuilder]: At program point L159(lines 43 160) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 5) (<= 5 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,978 INFO L853 garLoopResultBuilder]: At program point L135(lines 55 136) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 7) (<= 7 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,978 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2021-10-24 11:21:26,978 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 11:21:26,979 INFO L853 garLoopResultBuilder]: At program point L111(lines 67 112) the Hoare annotation is: (let ((.cse0 (<= 50 ULTIMATE.start_main_~main__y~0)) (.cse1 (<= ULTIMATE.start_main_~main__y~0 50))) (or (and .cse0 (<= 17 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 17) .cse1) (and .cse0 (<= 30 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 30) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 15) (<= 15 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 51 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 51) (<= 51 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 51)) (and (<= 57 ULTIMATE.start_main_~main__y~0) (<= 57 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 57) (<= ULTIMATE.start_main_~main__y~0 57)) (and (<= ULTIMATE.start_main_~main__x~0 10) .cse0 (<= 10 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 94 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 94) (<= ULTIMATE.start_main_~main__x~0 94) (<= 94 ULTIMATE.start_main_~main__y~0)) (and (<= 99 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 99) (<= 99 ULTIMATE.start_main_~main__x~0) (< ULTIMATE.start_main_~main__x~0 100)) (and (<= ULTIMATE.start_main_~main__y~0 83) (<= ULTIMATE.start_main_~main__x~0 83) (<= 83 ULTIMATE.start_main_~main__x~0) (<= 83 ULTIMATE.start_main_~main__y~0)) (and (<= 89 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 89) (<= 89 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 89)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 39) (<= 39 ULTIMATE.start_main_~main__x~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 29) (<= 29 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 46 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 46) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 40) .cse1 (<= 40 ULTIMATE.start_main_~main__x~0)) (and (<= 53 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 53) (<= 53 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 53)) (and (<= 28 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 28) .cse1) (and (<= 60 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 60) (<= 60 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 60)) (and (<= ULTIMATE.start_main_~main__y~0 56) (<= 56 ULTIMATE.start_main_~main__y~0) (<= 56 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 56)) (and (<= 12 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 12) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 88) (<= ULTIMATE.start_main_~main__y~0 88) (<= 88 ULTIMATE.start_main_~main__x~0) (<= 88 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 66) (<= 66 ULTIMATE.start_main_~main__x~0) (<= 66 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 66)) (and (<= 85 ULTIMATE.start_main_~main__x~0) (<= 85 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 85) (<= ULTIMATE.start_main_~main__y~0 85)) (and (<= ULTIMATE.start_main_~main__x~0 19) (<= 19 ULTIMATE.start_main_~main__x~0) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 43) .cse0 (<= 43 ULTIMATE.start_main_~main__x~0) .cse1) (and .cse0 (<= 22 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 22) .cse1) (and (<= 64 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 64) (<= 64 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 64)) (and (<= ULTIMATE.start_main_~main__y~0 59) (<= ULTIMATE.start_main_~main__x~0 59) (<= 59 ULTIMATE.start_main_~main__x~0) (<= 59 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= 16 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 16) .cse1) (and (<= 81 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 81) (<= 81 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 81)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 33) (<= 33 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 77 ULTIMATE.start_main_~main__x~0) (<= 77 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 77) (<= ULTIMATE.start_main_~main__y~0 77)) (and (<= 93 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 93) (<= ULTIMATE.start_main_~main__y~0 93) (<= 93 ULTIMATE.start_main_~main__y~0)) (and (<= 70 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 70) (<= ULTIMATE.start_main_~main__y~0 70) (<= 70 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= 25 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 25) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 26) .cse0 (<= 26 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 23 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 23)) (and (<= 54 ULTIMATE.start_main_~main__x~0) (<= 54 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 54) (<= ULTIMATE.start_main_~main__x~0 54)) (and (<= 98 ULTIMATE.start_main_~main__y~0) (<= 98 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 98) (< ULTIMATE.start_main_~main__x~0 99)) (and (<= 95 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 95) (<= ULTIMATE.start_main_~main__x~0 95) (<= 95 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 69) (<= 69 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 69) (<= 69 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__x~0 72) (<= ULTIMATE.start_main_~main__y~0 72) (<= 72 ULTIMATE.start_main_~main__y~0) (<= 72 ULTIMATE.start_main_~main__x~0)) (and (<= 9 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 9) .cse0 .cse1) (and (<= 91 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 91) (<= 91 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 91)) (and (<= ULTIMATE.start_main_~main__y~0 52) (<= 52 ULTIMATE.start_main_~main__y~0) (<= 52 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 52)) (and (<= 96 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 96) (<= 96 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 96)) (and (<= 82 ULTIMATE.start_main_~main__y~0) (<= 82 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 82) (<= ULTIMATE.start_main_~main__x~0 82)) (and (<= 97 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 97) (<= 97 ULTIMATE.start_main_~main__x~0) (< ULTIMATE.start_main_~main__x~0 98)) (and (<= 37 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 37) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 76) (<= 76 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 76) (<= 76 ULTIMATE.start_main_~main__y~0)) (and (<= 65 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 65) (<= ULTIMATE.start_main_~main__y~0 65) (<= 65 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 67) (<= 67 ULTIMATE.start_main_~main__x~0) (<= 67 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 67)) (and (<= 100 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 100) (<= 100 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 100)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 45) (<= 45 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 61 ULTIMATE.start_main_~main__x~0) (<= 61 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 61) (<= ULTIMATE.start_main_~main__y~0 61)) (and (<= ULTIMATE.start_main_~main__x~0 75) (<= ULTIMATE.start_main_~main__y~0 75) (<= 75 ULTIMATE.start_main_~main__y~0) (<= 75 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 34) (<= 34 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 58) (<= 58 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 58) (<= 58 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 18) .cse1 (<= 18 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 36) (<= 36 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 11 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 11) .cse1) (and .cse0 (<= 42 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 42) .cse1) (and .cse0 (<= 14 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 14) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 78) (<= 78 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 78) (<= 78 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 47) (<= 47 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 38) .cse0 (<= 38 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 68) (<= ULTIMATE.start_main_~main__x~0 68) (<= 68 ULTIMATE.start_main_~main__x~0) (<= 68 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 86) (<= ULTIMATE.start_main_~main__y~0 86) (<= 86 ULTIMATE.start_main_~main__x~0) (<= 86 ULTIMATE.start_main_~main__y~0)) (and (<= 32 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 32) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 31) (<= 31 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 20 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 20) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 63) (<= 63 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 63) (<= 63 ULTIMATE.start_main_~main__x~0)) (and (<= 79 ULTIMATE.start_main_~main__y~0) (<= 79 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 79) (<= ULTIMATE.start_main_~main__y~0 79)) (and .cse0 (<= 24 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 24) .cse1) (and (<= 90 ULTIMATE.start_main_~main__x~0) (<= 90 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 90) (<= ULTIMATE.start_main_~main__x~0 90)) (and .cse0 (<= 21 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 21) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 35) (<= 35 ULTIMATE.start_main_~main__x~0) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 87) (<= ULTIMATE.start_main_~main__y~0 87) (<= 87 ULTIMATE.start_main_~main__y~0) (<= 87 ULTIMATE.start_main_~main__x~0)) (and (<= 71 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 71) (<= 71 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 71)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 13) .cse1 (<= 13 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= 50 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 50) .cse1) (and (<= 49 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 49)) (and (<= ULTIMATE.start_main_~main__x~0 44) .cse0 (<= 44 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 62) (<= ULTIMATE.start_main_~main__y~0 62) (<= 62 ULTIMATE.start_main_~main__x~0) (<= 62 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 92) (<= ULTIMATE.start_main_~main__y~0 92) (<= 92 ULTIMATE.start_main_~main__x~0) (<= 92 ULTIMATE.start_main_~main__y~0)) (and (<= 73 ULTIMATE.start_main_~main__y~0) (<= 73 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 73) (<= ULTIMATE.start_main_~main__y~0 73)) (and (<= ULTIMATE.start_main_~main__y~0 74) (<= 74 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 74) (<= 74 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 80) (<= 80 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 80) (<= 80 ULTIMATE.start_main_~main__y~0)) (and (<= 84 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 84) (<= 84 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 84)) (and (<= ULTIMATE.start_main_~main__x~0 41) .cse0 (<= 41 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 27 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 27)) (and .cse0 (<= 48 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 48) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 55) (<= ULTIMATE.start_main_~main__x~0 55) (<= 55 ULTIMATE.start_main_~main__y~0) (<= 55 ULTIMATE.start_main_~main__x~0)))) [2021-10-24 11:21:26,979 INFO L853 garLoopResultBuilder]: At program point L195(lines 25 196) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 2) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= 2 ULTIMATE.start_main_~main__x~0)) [2021-10-24 11:21:26,979 INFO L857 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2021-10-24 11:21:26,979 INFO L860 garLoopResultBuilder]: At program point L212(lines 13 214) the Hoare annotation is: true [2021-10-24 11:21:26,979 INFO L853 garLoopResultBuilder]: At program point L171(lines 37 172) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 4 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 4) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,979 INFO L853 garLoopResultBuilder]: At program point L147(lines 49 148) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 6) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 6 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,979 INFO L853 garLoopResultBuilder]: At program point L123(lines 61 124) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 8) (<= 8 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2021-10-24 11:21:26,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 11:21:26,980 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2021-10-24 11:21:26,980 INFO L853 garLoopResultBuilder]: At program point L207(lines 19 208) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 1) (<= 1 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,980 INFO L853 garLoopResultBuilder]: At program point L183(lines 31 184) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 3) (<= 3 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-10-24 11:21:26,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:21:27,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:21:27 BoogieIcfgContainer [2021-10-24 11:21:27,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:21:27,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:21:27,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:21:27,038 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:21:27,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28" (3/4) ... [2021-10-24 11:21:27,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:21:27,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-24 11:21:27,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 11:21:27,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:21:27,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:21:27,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:21:27,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:21:27,112 INFO L168 Benchmark]: Toolchain (without parser) took 240053.69 ms. Allocated memory was 125.8 MB in the beginning and 625.0 MB in the end (delta: 499.1 MB). Free memory was 95.9 MB in the beginning and 504.0 MB in the end (delta: -408.1 MB). Peak memory consumption was 91.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,113 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:21:27,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.47 ms. Allocated memory is still 125.8 MB. Free memory was 95.6 MB in the beginning and 98.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.80 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 96.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:21:27,114 INFO L168 Benchmark]: Boogie Preprocessor took 24.78 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 96.0 MB in the end (delta: 852.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,114 INFO L168 Benchmark]: RCFGBuilder took 674.80 ms. Allocated memory is still 125.8 MB. Free memory was 95.7 MB in the beginning and 79.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,114 INFO L168 Benchmark]: TraceAbstraction took 238865.67 ms. Allocated memory was 125.8 MB in the beginning and 625.0 MB in the end (delta: 499.1 MB). Free memory was 78.9 MB in the beginning and 509.3 MB in the end (delta: -430.4 MB). Peak memory consumption was 403.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,115 INFO L168 Benchmark]: Witness Printer took 73.97 ms. Allocated memory is still 625.0 MB. Free memory was 509.3 MB in the beginning and 504.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:21:27,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.47 ms. Allocated memory is still 125.8 MB. Free memory was 95.6 MB in the beginning and 98.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.80 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 96.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.78 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 96.0 MB in the end (delta: 852.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 674.80 ms. Allocated memory is still 125.8 MB. Free memory was 95.7 MB in the beginning and 79.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 238865.67 ms. Allocated memory was 125.8 MB in the beginning and 625.0 MB in the end (delta: 499.1 MB). Free memory was 78.9 MB in the beginning and 509.3 MB in the end (delta: -430.4 MB). Peak memory consumption was 403.1 MB. Max. memory is 16.1 GB. * Witness Printer took 73.97 ms. Allocated memory is still 625.0 MB. Free memory was 509.3 MB in the beginning and 504.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 96]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 238708.6ms, OverallIterations: 6, TraceHistogramMax: 91, EmptinessCheckTime: 32.2ms, AutomataDifference: 18633.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2574.1ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 46 SDs, 0 SdLazy, 18764 SolverSat, 1354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15254.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 475 SyntacticMatches, 5 SemanticMatches, 681 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25802 ImplicationChecksByTransitivity, 102746.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, InterpolantAutomatonStates: 386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 79.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 103 NumberOfFragments, 1302 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 131.4ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 258 FormulaSimplificationTreeSizeReductionInter, 2431.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 112.4ms SsaConstructionTime, 988.2ms SatisfiabilityAnalysisTime, 198135.1ms InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 873 ConstructedInterpolants, 0 QuantifiedInterpolants, 20822 SizeOfPredicates, 7 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/25908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 3) && 3 <= main__x) && main__y <= 50 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((50 <= main__y && 17 <= main__x) && main__x <= 17) && main__y <= 50) || (((50 <= main__y && 30 <= main__x) && main__x <= 30) && main__y <= 50)) || (((50 <= main__y && main__x <= 15) && 15 <= main__x) && main__y <= 50)) || (((51 <= main__y && main__y <= 51) && 51 <= main__x) && main__x <= 51)) || (((57 <= main__y && 57 <= main__x) && main__x <= 57) && main__y <= 57)) || (((main__x <= 10 && 50 <= main__y) && 10 <= main__x) && main__y <= 50)) || (((94 <= main__x && main__y <= 94) && main__x <= 94) && 94 <= main__y)) || (((99 <= main__y && main__y <= 99) && 99 <= main__x) && main__x < 100)) || (((main__y <= 83 && main__x <= 83) && 83 <= main__x) && 83 <= main__y)) || (((89 <= main__x && main__y <= 89) && 89 <= main__y) && main__x <= 89)) || (((50 <= main__y && main__x <= 39) && 39 <= main__x) && main__y <= 50)) || (((50 <= main__y && main__x <= 29) && 29 <= main__x) && main__y <= 50)) || (((46 <= main__x && 50 <= main__y) && main__x <= 46) && main__y <= 50)) || (((50 <= main__y && main__x <= 40) && main__y <= 50) && 40 <= main__x)) || (((53 <= main__x && main__y <= 53) && 53 <= main__y) && main__x <= 53)) || (((28 <= main__x && 50 <= main__y) && main__x <= 28) && main__y <= 50)) || (((60 <= main__x && main__y <= 60) && 60 <= main__y) && main__x <= 60)) || (((main__y <= 56 && 56 <= main__y) && 56 <= main__x) && main__x <= 56)) || (((12 <= main__x && main__x <= 12) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 88 && main__y <= 88) && 88 <= main__x) && 88 <= main__y)) || (((main__x <= 66 && 66 <= main__x) && 66 <= main__y) && main__y <= 66)) || (((85 <= main__x && 85 <= main__y) && main__x <= 85) && main__y <= 85)) || (((main__x <= 19 && 19 <= main__x) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 43 && 50 <= main__y) && 43 <= main__x) && main__y <= 50)) || (((50 <= main__y && 22 <= main__x) && main__x <= 22) && main__y <= 50)) || (((64 <= main__x && main__x <= 64) && 64 <= main__y) && main__y <= 64)) || (((main__y <= 59 && main__x <= 59) && 59 <= main__x) && 59 <= main__y)) || (((50 <= main__y && 16 <= main__x) && main__x <= 16) && main__y <= 50)) || (((81 <= main__x && main__y <= 81) && 81 <= main__y) && main__x <= 81)) || (((50 <= main__y && main__x <= 33) && 33 <= main__x) && main__y <= 50)) || (((77 <= main__x && 77 <= main__y) && main__x <= 77) && main__y <= 77)) || (((93 <= main__x && main__x <= 93) && main__y <= 93) && 93 <= main__y)) || (((70 <= main__y && main__x <= 70) && main__y <= 70) && 70 <= main__x)) || (((50 <= main__y && 25 <= main__x) && main__x <= 25) && main__y <= 50)) || (((main__x <= 26 && 50 <= main__y) && 26 <= main__x) && main__y <= 50)) || (((23 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 23)) || (((54 <= main__x && 54 <= main__y) && main__y <= 54) && main__x <= 54)) || (((98 <= main__y && 98 <= main__x) && main__y <= 98) && main__x < 99)) || (((95 <= main__x && main__y <= 95) && main__x <= 95) && 95 <= main__y)) || (((main__x <= 69 && 69 <= main__y) && main__y <= 69) && 69 <= main__x)) || (((main__x <= 72 && main__y <= 72) && 72 <= main__y) && 72 <= main__x)) || (((9 <= main__x && main__x <= 9) && 50 <= main__y) && main__y <= 50)) || (((91 <= main__y && main__x <= 91) && 91 <= main__x) && main__y <= 91)) || (((main__y <= 52 && 52 <= main__y) && 52 <= main__x) && main__x <= 52)) || (((96 <= main__y && main__x <= 96) && 96 <= main__x) && main__y <= 96)) || (((82 <= main__y && 82 <= main__x) && main__y <= 82) && main__x <= 82)) || (((97 <= main__y && main__y <= 97) && 97 <= main__x) && main__x < 98)) || (((37 <= main__x && 50 <= main__y) && main__x <= 37) && main__y <= 50)) || (((main__x <= 76 && 76 <= main__x) && main__y <= 76) && 76 <= main__y)) || (((65 <= main__x && main__x <= 65) && main__y <= 65) && 65 <= main__y)) || (((main__x <= 67 && 67 <= main__x) && 67 <= main__y) && main__y <= 67)) || (((100 <= main__x && main__y <= 100) && 100 <= main__y) && main__x <= 100)) || (((50 <= main__y && main__x <= 45) && 45 <= main__x) && main__y <= 50)) || (((61 <= main__x && 61 <= main__y) && main__x <= 61) && main__y <= 61)) || (((main__x <= 75 && main__y <= 75) && 75 <= main__y) && 75 <= main__x)) || (((50 <= main__y && main__x <= 34) && 34 <= main__x) && main__y <= 50)) || (((main__x <= 58 && 58 <= main__x) && main__y <= 58) && 58 <= main__y)) || (((50 <= main__y && main__x <= 18) && main__y <= 50) && 18 <= main__x)) || (((50 <= main__y && main__x <= 36) && 36 <= main__x) && main__y <= 50)) || (((11 <= main__x && 50 <= main__y) && main__x <= 11) && main__y <= 50)) || (((50 <= main__y && 42 <= main__x) && main__x <= 42) && main__y <= 50)) || (((50 <= main__y && 14 <= main__x) && main__x <= 14) && main__y <= 50)) || (((main__y <= 78 && 78 <= main__x) && main__x <= 78) && 78 <= main__y)) || (((50 <= main__y && main__x <= 47) && 47 <= main__x) && main__y <= 50)) || (((main__x <= 38 && 50 <= main__y) && 38 <= main__x) && main__y <= 50)) || (((main__y <= 68 && main__x <= 68) && 68 <= main__x) && 68 <= main__y)) || (((main__x <= 86 && main__y <= 86) && 86 <= main__x) && 86 <= main__y)) || (((32 <= main__x && 50 <= main__y) && main__x <= 32) && main__y <= 50)) || (((50 <= main__y && main__x <= 31) && 31 <= main__x) && main__y <= 50)) || (((20 <= main__x && 50 <= main__y) && main__x <= 20) && main__y <= 50)) || (((main__x <= 63 && 63 <= main__y) && main__y <= 63) && 63 <= main__x)) || (((79 <= main__y && 79 <= main__x) && main__x <= 79) && main__y <= 79)) || (((50 <= main__y && 24 <= main__x) && main__x <= 24) && main__y <= 50)) || (((90 <= main__x && 90 <= main__y) && main__y <= 90) && main__x <= 90)) || (((50 <= main__y && 21 <= main__x) && main__x <= 21) && main__y <= 50)) || (((main__x <= 35 && 35 <= main__x) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 87 && main__y <= 87) && 87 <= main__y) && 87 <= main__x)) || (((71 <= main__x && main__y <= 71) && 71 <= main__y) && main__x <= 71)) || (((50 <= main__y && main__x <= 13) && main__y <= 50) && 13 <= main__x)) || (((50 <= main__y && 50 <= main__x) && main__x <= 50) && main__y <= 50)) || (((49 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 49)) || (((main__x <= 44 && 50 <= main__y) && 44 <= main__x) && main__y <= 50)) || (((main__x <= 62 && main__y <= 62) && 62 <= main__x) && 62 <= main__y)) || (((main__x <= 92 && main__y <= 92) && 92 <= main__x) && 92 <= main__y)) || (((73 <= main__y && 73 <= main__x) && main__x <= 73) && main__y <= 73)) || (((main__y <= 74 && 74 <= main__x) && main__x <= 74) && 74 <= main__y)) || (((main__y <= 80 && 80 <= main__x) && main__x <= 80) && 80 <= main__y)) || (((84 <= main__y && main__x <= 84) && 84 <= main__x) && main__y <= 84)) || (((main__x <= 41 && 50 <= main__y) && 41 <= main__x) && main__y <= 50)) || (((27 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 27)) || (((50 <= main__y && 48 <= main__x) && main__x <= 48) && main__y <= 50)) || (((main__y <= 55 && main__x <= 55) && 55 <= main__y) && 55 <= main__x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 7) && 7 <= main__x) && main__y <= 50 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((main__x <= 1 && 1 <= main__x) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__x <= 2 && 50 <= main__y) && main__y <= 50) && 2 <= main__x - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 8) && 8 <= main__x) && main__y <= 50 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 5) && 5 <= main__x) && main__y <= 50 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__x <= 6 && 50 <= main__y) && 6 <= main__x) && main__y <= 50 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((50 <= main__y && 4 <= main__x) && main__x <= 4) && main__y <= 50 RESULT: Ultimate proved your program to be correct! [2021-10-24 11:21:27,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ae69db-d48d-454a-b6a8-e916cc571a26/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...