./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF --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 599bde24b734dff8bcd3a53946a1033ced468fb55cf924fdefecd161d0c1af79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:15:00,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:15:00,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:15:00,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:15:00,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:15:00,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:15:00,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:15:00,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:15:00,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:15:00,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:15:00,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:15:00,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:15:00,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:15:00,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:15:00,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:15:00,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:15:00,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:15:00,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:15:00,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:15:00,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:15:00,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:15:00,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:15:00,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:15:00,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:15:00,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:15:00,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:15:00,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:15:00,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:15:00,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:15:00,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:15:00,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:15:00,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:15:00,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:15:00,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:15:00,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:15:00,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:15:00,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:15:00,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:15:00,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:15:00,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:15:00,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:15:00,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:15:00,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:15:00,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:15:00,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:15:00,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:15:00,709 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:15:00,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:15:00,709 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:15:00,709 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:15:00,709 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:15:00,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:15:00,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:15:00,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:15:00,711 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:15:00,711 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:15:00,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:15:00,712 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:15:00,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:15:00,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:15:00,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:15:00,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:15:00,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:15:00,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:15:00,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:15:00,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:15:00,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:15:00,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:15:00,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:15:00,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:15:00,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:15:00,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:15:00,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:15:00,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:00,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:15:00,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:15:00,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:15:00,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:15:00,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:15:00,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:15:00,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:15:00,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:15:00,719 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_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 599bde24b734dff8bcd3a53946a1033ced468fb55cf924fdefecd161d0c1af79 [2021-11-12 23:15:00,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:15:01,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:15:01,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:15:01,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:15:01,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:15:01,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-12 23:15:01,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/data/a597d3ce3/37bc56edd8fd4d669905bc9817f332a7/FLAG961810c32 [2021-11-12 23:15:01,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:15:01,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-12 23:15:01,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/data/a597d3ce3/37bc56edd8fd4d669905bc9817f332a7/FLAG961810c32 [2021-11-12 23:15:01,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/data/a597d3ce3/37bc56edd8fd4d669905bc9817f332a7 [2021-11-12 23:15:01,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:15:01,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:15:01,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:01,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:15:01,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:15:01,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:01" (1/1) ... [2021-11-12 23:15:01,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c69224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:01, skipping insertion in model container [2021-11-12 23:15:01,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:01" (1/1) ... [2021-11-12 23:15:01,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:15:01,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:02,072 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_068f9bea-4cd8-49c3-b16a-a721f4294ecc/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-12 23:15:02,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:02,093 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:15:02,105 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_068f9bea-4cd8-49c3-b16a-a721f4294ecc/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-12 23:15:02,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:02,124 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:15:02,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02 WrapperNode [2021-11-12 23:15:02,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:02,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:15:02,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:15:02,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:15:02,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:15:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:15:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:15:02,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:15:02,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:15:02,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:15:02,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:15:02,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:15:02,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (1/1) ... [2021-11-12 23:15:02,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:02,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:02,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:15:02,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:15:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:15:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:15:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:15:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:15:02,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:15:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:15:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:15:02,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:15:02,517 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:15:02,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:15:02 BoogieIcfgContainer [2021-11-12 23:15:02,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:15:02,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:15:02,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:15:02,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:15:02,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:15:01" (1/3) ... [2021-11-12 23:15:02,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aafead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:15:02, skipping insertion in model container [2021-11-12 23:15:02,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:02" (2/3) ... [2021-11-12 23:15:02,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aafead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:15:02, skipping insertion in model container [2021-11-12 23:15:02,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:15:02" (3/3) ... [2021-11-12 23:15:02,543 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tripl_access_init_const.c [2021-11-12 23:15:02,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:15:02,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:15:02,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:15:02,630 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:15:02,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:15:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:15:02,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:02,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:15:02,649 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash 72684179, now seen corresponding path program 1 times [2021-11-12 23:15:02,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:02,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710136897] [2021-11-12 23:15:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:02,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:02,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:02,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710136897] [2021-11-12 23:15:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710136897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:02,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:15:02,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181757077] [2021-11-12 23:15:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:02,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:15:02,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:15:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:15:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:15:02,865 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:02,919 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-12 23:15:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:15:02,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-12 23:15:02,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:02,929 INFO L225 Difference]: With dead ends: 15 [2021-11-12 23:15:02,929 INFO L226 Difference]: Without dead ends: 8 [2021-11-12 23:15:02,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:15:02,936 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:02,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 18.08ms Time] [2021-11-12 23:15:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-12 23:15:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-12 23:15:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-12 23:15:02,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-12 23:15:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:02,968 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-12 23:15:02,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-12 23:15:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:15:02,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:02,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:15:02,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:15:02,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544120, now seen corresponding path program 1 times [2021-11-12 23:15:02,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:02,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332172489] [2021-11-12 23:15:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:03,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:03,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332172489] [2021-11-12 23:15:03,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332172489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:03,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642211317] [2021-11-12 23:15:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:03,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:03,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:03,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:03,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:15:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:03,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:03,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:03,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642211317] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:03,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1035054383] [2021-11-12 23:15:03,373 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 23:15:03,373 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:15:03,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:15:03,384 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:15:03,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:15:03,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:03,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:15:03,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:03,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:15:03,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-12 23:15:03,481 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_28|]} [2021-11-12 23:15:03,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-12 23:15:03,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:03,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:03,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:03,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:03,644 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:15:03,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:03,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:03,722 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:03,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:03,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 23:15:03,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:03,753 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-12 23:15:03,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,766 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:03,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:15:03,791 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-12 23:15:03,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:03,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 48 [2021-11-12 23:15:03,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:03,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:03,823 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:03,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:03,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:03,847 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-12 23:15:03,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:15:03,851 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:03,851 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-12 23:15:03,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:03,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:03,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,070 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:04,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:04,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:15:04,100 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:04,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:15:04,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-12 23:15:04,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:04,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-12 23:15:04,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-12 23:15:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-12 23:15:04,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:04,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:04,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:04,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 93 [2021-11-12 23:15:04,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:04,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:04,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:04,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,389 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-12 23:15:04,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-12 23:15:04,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:15:04,402 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-12 23:15:04,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,526 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-12 23:15:04,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:04,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:15:04,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:04,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2021-11-12 23:15:04,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:04,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:04,560 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:04,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:04,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:04,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:15:04,567 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:04,567 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-12 23:15:04,578 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-12 23:15:04,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:15:04,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:15:04,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:15:04,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:15:04,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-11-12 23:15:04,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522392867] [2021-11-12 23:15:04,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:15:04,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:15:04,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:15:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:15:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:15:04,887 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:04,925 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-11-12 23:15:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:15:04,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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 6 [2021-11-12 23:15:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:04,926 INFO L225 Difference]: With dead ends: 16 [2021-11-12 23:15:04,926 INFO L226 Difference]: Without dead ends: 11 [2021-11-12 23:15:04,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:15:04,935 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:04,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 30.39ms Time] [2021-11-12 23:15:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-12 23:15:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-12 23:15:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-12 23:15:04,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-11-12 23:15:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:04,943 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-12 23:15:04,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-12 23:15:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:15:04,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:04,948 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-12 23:15:04,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:05,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-12 23:15:05,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:05,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1273784365, now seen corresponding path program 2 times [2021-11-12 23:15:05,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:05,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329841581] [2021-11-12 23:15:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:05,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:05,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:05,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329841581] [2021-11-12 23:15:05,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329841581] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:05,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167170899] [2021-11-12 23:15:05,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:15:05,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:05,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:05,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:15:05,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-12 23:15:05,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:15:05,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:15:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:05,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:05,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167170899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:05,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332135330] [2021-11-12 23:15:05,556 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 23:15:05,556 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:15:05,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:15:05,557 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:15:05,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:15:05,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,567 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:15:05,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:15:05,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-12 23:15:05,579 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_29|]} [2021-11-12 23:15:05,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-12 23:15:05,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:05,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:05,605 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:15:05,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:05,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:05,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 23:15:05,679 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,679 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-12 23:15:05,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:15:05,694 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-12 23:15:05,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 48 [2021-11-12 23:15:05,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:05,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:05,721 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,735 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-12 23:15:05,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:15:05,738 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,739 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-12 23:15:05,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:05,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,875 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:15:05,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:15:05,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-12 23:15:05,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:05,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-12 23:15:05,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-12 23:15:05,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 93 [2021-11-12 23:15:05,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:05,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:05,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:05,978 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:05,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:06,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-12 23:15:06,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:06,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:06,009 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:06,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,068 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-12 23:15:06,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-12 23:15:06,075 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:15:06,075 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-12 23:15:06,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,175 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-12 23:15:06,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:06,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:15:06,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:06,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:06,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:06,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:06,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2021-11-12 23:15:06,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:06,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:06,195 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:06,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:06,199 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:06,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:15:06,202 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:06,202 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-12 23:15:06,210 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-12 23:15:06,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:15:06,218 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:15:06,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:15:06,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:15:06,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-11-12 23:15:06,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134117684] [2021-11-12 23:15:06,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:15:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 23:15:06,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:15:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 23:15:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=231, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:15:06,494 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:06,533 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-11-12 23:15:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:15:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:15:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:06,534 INFO L225 Difference]: With dead ends: 22 [2021-11-12 23:15:06,534 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 23:15:06,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=231, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:15:06,536 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:06,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 38 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 29.95ms Time] [2021-11-12 23:15:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 23:15:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 23:15:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-12 23:15:06,541 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-11-12 23:15:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:06,542 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-12 23:15:06,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-12 23:15:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:15:06,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:06,543 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-11-12 23:15:06,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:06,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-12 23:15:06,769 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:06,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 904508339, now seen corresponding path program 3 times [2021-11-12 23:15:06,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:06,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180018465] [2021-11-12 23:15:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:06,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:06,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:06,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180018465] [2021-11-12 23:15:06,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180018465] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:06,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183023782] [2021-11-12 23:15:06,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:15:06,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:06,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:06,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 23:15:07,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:15:07,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:15:07,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:15:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:07,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:07,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183023782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:07,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365470216] [2021-11-12 23:15:07,449 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 23:15:07,449 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:15:07,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:15:07,449 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:15:07,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:15:07,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:15:07,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:15:07,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-12 23:15:07,462 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 36=[|v_#valid_30|]} [2021-11-12 23:15:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-12 23:15:07,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:07,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:07,484 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:15:07,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:07,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:07,519 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 23:15:07,528 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,528 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-12 23:15:07,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:15:07,558 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-12 23:15:07,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 48 [2021-11-12 23:15:07,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:07,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:15:07,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,585 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-12 23:15:07,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:15:07,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,588 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-12 23:15:07,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,659 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:15:07,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:15:07,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-12 23:15:07,672 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-12 23:15:07,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-12 23:15:07,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-12 23:15:07,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:07,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:07,715 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 93 [2021-11-12 23:15:07,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:07,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:07,754 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,803 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-12 23:15:07,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-12 23:15:07,809 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:15:07,810 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-12 23:15:07,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,873 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-12 23:15:07,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:07,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:15:07,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:07,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2021-11-12 23:15:07,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:07,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:07,888 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:07,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:07,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:15:07,893 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:07,893 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-12 23:15:07,898 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-12 23:15:07,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:15:07,903 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:15:08,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:15:08,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:15:08,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-11-12 23:15:08,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24955718] [2021-11-12 23:15:08,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:15:08,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-12 23:15:08,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:15:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-12 23:15:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=819, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:15:08,166 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:08,227 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-11-12 23:15:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:15:08,227 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:15:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:08,228 INFO L225 Difference]: With dead ends: 34 [2021-11-12 23:15:08,229 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 23:15:08,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=663, Invalid=819, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:15:08,230 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:08,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 61 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 47.33ms Time] [2021-11-12 23:15:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 23:15:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-12 23:15:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-12 23:15:08,237 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-11-12 23:15:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:08,237 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-12 23:15:08,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-12 23:15:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:15:08,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:08,239 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2021-11-12 23:15:08,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:08,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:08,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash 102675315, now seen corresponding path program 4 times [2021-11-12 23:15:08,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:08,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390307941] [2021-11-12 23:15:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:08,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:08,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:08,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390307941] [2021-11-12 23:15:08,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390307941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:08,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529494198] [2021-11-12 23:15:08,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:15:08,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:08,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:08,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:08,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:15:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:08,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:15:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:09,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:10,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529494198] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:10,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1281198146] [2021-11-12 23:15:10,348 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 23:15:10,348 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:15:10,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:15:10,348 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:15:10,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:15:10,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,354 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:15:10,357 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:15:10,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-12 23:15:10,362 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 36=[|v_#valid_31|]} [2021-11-12 23:15:10,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-12 23:15:10,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:10,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-12 23:15:10,384 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,390 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:15:10,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:10,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:15:10,424 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 23:15:10,437 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,437 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-12 23:15:10,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,443 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:15:10,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-12 23:15:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-12 23:15:10,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:10,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:10,464 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-12 23:15:10,473 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,474 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:164 [2021-11-12 23:15:10,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:15:10,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-12 23:15:10,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-12 23:15:10,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-12 23:15:10,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:15:10,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-12 23:15:10,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:10,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:15:10,588 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 104 [2021-11-12 23:15:10,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-12 23:15:10,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-12 23:15:10,633 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,707 INFO L180 QuantifierPusher]: treesize reduction 105, result has 78.6 percent of original size [2021-11-12 23:15:10,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-12 23:15:10,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:15:10,714 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:482, output treesize:385 [2021-11-12 23:15:10,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,773 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-12 23:15:10,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:15:10,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:15:10,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:15:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:10,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2021-11-12 23:15:10,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:10,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:15:10,789 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:15:10,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:15:10,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:15:10,794 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:15:10,794 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-12 23:15:10,798 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-12 23:15:10,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:15:10,805 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:15:11,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:15:11,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:15:11,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-11-12 23:15:11,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363063294] [2021-11-12 23:15:11,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:15:11,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-12 23:15:11,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:15:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-12 23:15:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2475, Invalid=3075, Unknown=0, NotChecked=0, Total=5550 [2021-11-12 23:15:11,053 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:11,177 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2021-11-12 23:15:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-12 23:15:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 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 27 [2021-11-12 23:15:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:11,179 INFO L225 Difference]: With dead ends: 58 [2021-11-12 23:15:11,179 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 23:15:11,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2475, Invalid=3075, Unknown=0, NotChecked=0, Total=5550 [2021-11-12 23:15:11,182 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:11,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 102 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [27 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 89.35ms Time] [2021-11-12 23:15:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 23:15:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-12 23:15:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-11-12 23:15:11,191 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 27 [2021-11-12 23:15:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-11-12 23:15:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:15:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-11-12 23:15:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 23:15:11,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:11,194 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2021-11-12 23:15:11,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:11,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-12 23:15:11,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1127469811, now seen corresponding path program 5 times [2021-11-12 23:15:11,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:15:11,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614923511] [2021-11-12 23:15:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:11,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:15:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:15:12,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:15:12,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614923511] [2021-11-12 23:15:12,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614923511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:12,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901149552] [2021-11-12 23:15:12,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:15:12,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:12,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:12,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068f9bea-4cd8-49c3-b16a-a721f4294ecc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process