./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/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_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 00:54:31,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:31,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:31,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:31,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:31,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:31,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:31,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:31,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:31,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:31,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:31,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:31,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:31,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:31,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:31,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:31,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:31,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:31,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:31,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:31,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:31,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:31,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:31,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:31,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:31,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:31,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:31,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:31,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:31,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:31,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:31,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:31,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:31,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:31,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:31,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:31,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:31,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:31,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:31,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:31,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:31,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:54:31,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:31,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:31,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:31,916 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:31,916 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:31,916 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:31,917 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:31,917 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:31,917 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:31,918 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:31,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:31,919 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:31,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:31,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:31,920 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:31,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:31,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:31,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:31,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:31,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:31,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:31,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:31,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:31,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:31,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:31,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:31,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:31,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:31,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:31,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:31,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:31,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:31,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:31,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:31,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:31,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:31,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:31,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:31,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:31,928 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_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 599bde24b734dff8bcd3a53946a1033ced468fb55cf924fdefecd161d0c1af79 [2021-11-07 00:54:32,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:32,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:32,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:32,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:32,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:32,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-07 00:54:32,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/data/20942f6c1/19dbbf9267e24da2a6742e7ad25fdbcb/FLAG311423220 [2021-11-07 00:54:32,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:32,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-07 00:54:32,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/data/20942f6c1/19dbbf9267e24da2a6742e7ad25fdbcb/FLAG311423220 [2021-11-07 00:54:33,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/data/20942f6c1/19dbbf9267e24da2a6742e7ad25fdbcb [2021-11-07 00:54:33,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:33,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:33,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:33,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:33,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:33,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb0836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33, skipping insertion in model container [2021-11-07 00:54:33,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:33,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:33,517 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_c3c86b41-dc64-4866-872b-fa4b2286a2e6/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-07 00:54:33,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:33,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:33,554 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_c3c86b41-dc64-4866-872b-fa4b2286a2e6/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-07 00:54:33,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:33,576 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:33,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33 WrapperNode [2021-11-07 00:54:33,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:33,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:33,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:33,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:33,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:33,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:33,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:33,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:33,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:33,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:33,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:33,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:33,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:33,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:33,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:33,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:54:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 00:54:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 00:54:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:34,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:34,025 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 00:54:34,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:34 BoogieIcfgContainer [2021-11-07 00:54:34,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:34,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:34,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:34,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:33" (1/3) ... [2021-11-07 00:54:34,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22730e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:34, skipping insertion in model container [2021-11-07 00:54:34,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33" (2/3) ... [2021-11-07 00:54:34,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22730e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:34, skipping insertion in model container [2021-11-07 00:54:34,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:34" (3/3) ... [2021-11-07 00:54:34,040 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tripl_access_init_const.c [2021-11-07 00:54:34,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:34,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:54:34,103 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:34,110 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 [2021-11-07 00:54:34,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:54:34,125 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) [2021-11-07 00:54:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 00:54:34,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:34,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 00:54:34,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 72684179, now seen corresponding path program 1 times [2021-11-07 00:54:34,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:34,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670464009] [2021-11-07 00:54:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:34,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:34,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:34,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670464009] [2021-11-07 00:54:34,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670464009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:34,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:34,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:54:34,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126634107] [2021-11-07 00:54:34,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:34,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:34,362 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) [2021-11-07 00:54:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:34,422 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-07 00:54:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:34,424 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 [2021-11-07 00:54:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:34,460 INFO L225 Difference]: With dead ends: 15 [2021-11-07 00:54:34,461 INFO L226 Difference]: Without dead ends: 8 [2021-11-07 00:54:34,463 INFO L786 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 [2021-11-07 00:54:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-07 00:54:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-07 00:54:34,530 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) [2021-11-07 00:54:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-07 00:54:34,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-07 00:54:34,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:34,532 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-07 00:54:34,533 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) [2021-11-07 00:54:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-07 00:54:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:54:34,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:34,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:54:34,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:54:34,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544120, now seen corresponding path program 1 times [2021-11-07 00:54:34,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:34,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394488563] [2021-11-07 00:54:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:34,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:34,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:34,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394488563] [2021-11-07 00:54:34,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394488563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:34,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820771175] [2021-11-07 00:54:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:34,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:34,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:34,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:34,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:54:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:34,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:34,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:34,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:34,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820771175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:34,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1969184361] [2021-11-07 00:54:35,016 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 00:54:35,016 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:35,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:35,034 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:35,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:35,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,109 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-07 00:54:35,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 00:54:35,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:35,163 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_28|]} [2021-11-07 00:54:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,224 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 [2021-11-07 00:54:35,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:35,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:35,238 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,374 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 [2021-11-07 00:54:35,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:35,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:35,386 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 00:54:35,448 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,448 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-07 00:54:35,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,471 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:35,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:35,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,519 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 [2021-11-07 00:54:35,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:35,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:35,536 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 00:54:35,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,597 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:164 [2021-11-07 00:54:35,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,756 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,765 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:35,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-07 00:54:35,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-07 00:54:35,780 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:35,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-07 00:54:35,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-07 00:54:35,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,840 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 [2021-11-07 00:54:35,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:35,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:35,846 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:35,895 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 [2021-11-07 00:54:35,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 00:54:35,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 00:54:35,903 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:35,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:35,949 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:35,973 INFO L180 QuantifierPusher]: treesize reduction 105, result has 78.6 percent of original size [2021-11-07 00:54:35,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 00:54:35,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:35,996 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:482, output treesize:385 [2021-11-07 00:54:36,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,085 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-07 00:54:36,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:36,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:36,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:36,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:36,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:36,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:36,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:36,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-07 00:54:36,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:36,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:36,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:36,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:36,107 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:36,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:36,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:36,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:36,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 00:54:36,115 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:36,115 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-07 00:54:36,123 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-07 00:54:36,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-07 00:54:36,132 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:36,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:36,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:54:36,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-11-07 00:54:36,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849120549] [2021-11-07 00:54:36,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:36,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:36,457 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) [2021-11-07 00:54:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:36,488 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-11-07 00:54:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:36,489 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 [2021-11-07 00:54:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:36,490 INFO L225 Difference]: With dead ends: 16 [2021-11-07 00:54:36,490 INFO L226 Difference]: Without dead ends: 11 [2021-11-07 00:54:36,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-07 00:54:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 00:54:36,497 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) [2021-11-07 00:54:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-07 00:54:36,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-11-07 00:54:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:36,499 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-07 00:54:36,500 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) [2021-11-07 00:54:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-07 00:54:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:54:36,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:36,501 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-07 00:54:36,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:36,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:36,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1273784365, now seen corresponding path program 2 times [2021-11-07 00:54:36,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:36,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462174134] [2021-11-07 00:54:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:36,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:36,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:36,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462174134] [2021-11-07 00:54:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462174134] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:36,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091568997] [2021-11-07 00:54:36,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:54:36,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:36,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:36,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:54:36,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 00:54:36,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:54:36,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:54:36,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:37,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:37,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091568997] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:37,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347701427] [2021-11-07 00:54:37,124 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 00:54:37,124 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:37,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:37,124 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:37,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:37,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-07 00:54:37,139 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 00:54:37,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:37,151 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_29|]} [2021-11-07 00:54:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,185 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 [2021-11-07 00:54:37,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:37,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:37,190 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,239 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 [2021-11-07 00:54:37,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:37,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:37,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,257 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 00:54:37,267 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,268 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-07 00:54:37,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 00:54:37,288 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-07 00:54:37,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,310 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 [2021-11-07 00:54:37,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 00:54:37,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 00:54:37,322 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,338 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-07 00:54:37,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-07 00:54:37,343 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,346 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-07 00:54:37,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,461 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:37,470 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 00:54:37,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-07 00:54:37,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-07 00:54:37,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-07 00:54:37,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,532 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 [2021-11-07 00:54:37,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:37,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:37,537 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,584 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 [2021-11-07 00:54:37,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:37,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:37,596 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,682 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-07 00:54:37,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-07 00:54:37,688 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:37,689 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-07 00:54:37,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,751 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-07 00:54:37,753 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:37,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:37,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:37,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-07 00:54:37,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:37,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:37,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:37,770 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:37,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 00:54:37,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:37,773 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-07 00:54:37,778 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-07 00:54:37,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-07 00:54:37,785 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:38,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:38,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:54:38,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-11-07 00:54:38,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832755713] [2021-11-07 00:54:38,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 00:54:38,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 00:54:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=235, Unknown=0, NotChecked=0, Total=420 [2021-11-07 00:54:38,077 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) [2021-11-07 00:54:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:38,123 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-11-07 00:54:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 00:54:38,123 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 [2021-11-07 00:54:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:38,124 INFO L225 Difference]: With dead ends: 22 [2021-11-07 00:54:38,124 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 00:54:38,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=235, Unknown=0, NotChecked=0, Total=420 [2021-11-07 00:54:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 00:54:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 00:54:38,129 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) [2021-11-07 00:54:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-07 00:54:38,129 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-11-07 00:54:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:38,130 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-07 00:54:38,130 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) [2021-11-07 00:54:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-07 00:54:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:54:38,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:38,131 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-11-07 00:54:38,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:38,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 00:54:38,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash 904508339, now seen corresponding path program 3 times [2021-11-07 00:54:38,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:38,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652284483] [2021-11-07 00:54:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:38,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:38,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:38,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652284483] [2021-11-07 00:54:38,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652284483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:38,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091137654] [2021-11-07 00:54:38,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 00:54:38,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:38,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:38,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:38,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 00:54:38,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 00:54:38,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:54:38,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:54:38,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:38,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:39,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091137654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:39,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1089513000] [2021-11-07 00:54:39,177 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 00:54:39,177 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:39,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:39,177 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:39,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:39,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,183 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-07 00:54:39,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 00:54:39,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:39,199 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 36=[|v_#valid_30|]} [2021-11-07 00:54:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,225 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 [2021-11-07 00:54:39,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:39,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:39,228 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,268 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 [2021-11-07 00:54:39,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:39,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:39,274 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 00:54:39,288 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,288 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-07 00:54:39,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,294 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:39,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:39,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,317 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 [2021-11-07 00:54:39,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:39,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:39,323 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 00:54:39,334 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,335 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:164 [2021-11-07 00:54:39,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,414 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-07 00:54:39,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:39,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-07 00:54:39,433 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-07 00:54:39,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-07 00:54:39,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-07 00:54:39,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:39,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:39,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,534 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 [2021-11-07 00:54:39,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 00:54:39,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 00:54:39,540 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,593 INFO L180 QuantifierPusher]: treesize reduction 105, result has 78.6 percent of original size [2021-11-07 00:54:39,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 00:54:39,598 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:39,599 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:482, output treesize:385 [2021-11-07 00:54:39,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,727 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-07 00:54:39,729 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:39,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:39,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:39,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:39,739 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 [2021-11-07 00:54:39,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:39,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:39,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:39,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:39,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 00:54:39,748 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:39,748 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-07 00:54:39,753 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-07 00:54:39,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-07 00:54:39,760 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:40,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:40,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:54:40,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-11-07 00:54:40,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72462587] [2021-11-07 00:54:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 00:54:40,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 00:54:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=829, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 00:54:40,019 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) [2021-11-07 00:54:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:40,104 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-11-07 00:54:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 00:54:40,104 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 [2021-11-07 00:54:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:40,105 INFO L225 Difference]: With dead ends: 34 [2021-11-07 00:54:40,105 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 00:54:40,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=653, Invalid=829, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 00:54:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 00:54:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 00:54:40,111 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) [2021-11-07 00:54:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-07 00:54:40,112 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-11-07 00:54:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:40,113 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-07 00:54:40,113 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) [2021-11-07 00:54:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-07 00:54:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 00:54:40,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:40,114 INFO L513 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2021-11-07 00:54:40,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:40,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 00:54:40,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash 102675315, now seen corresponding path program 4 times [2021-11-07 00:54:40,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:40,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989401710] [2021-11-07 00:54:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:40,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:40,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:40,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989401710] [2021-11-07 00:54:40,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989401710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:40,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867091593] [2021-11-07 00:54:40,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 00:54:40,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:40,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:40,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 00:54:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:40,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 00:54:40,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:41,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:42,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867091593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:42,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592948837] [2021-11-07 00:54:42,523 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 00:54:42,523 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:42,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:42,523 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:42,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:42,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,530 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-07 00:54:42,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 00:54:42,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 00:54:42,537 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 36=[|v_#valid_31|]} [2021-11-07 00:54:42,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,558 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 [2021-11-07 00:54:42,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:42,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:42,561 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,603 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 [2021-11-07 00:54:42,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:42,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:42,608 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 00:54:42,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,619 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-07 00:54:42,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,624 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 00:54:42,628 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-07 00:54:42,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-07 00:54:42,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 00:54:42,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 00:54:42,648 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,655 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,658 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-07 00:54:42,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-07 00:54:42,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,661 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-07 00:54:42,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:42,741 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 00:54:42,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-07 00:54:42,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-07 00:54:42,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-07 00:54:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,808 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 [2021-11-07 00:54:42,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:42,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:42,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,841 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 [2021-11-07 00:54:42,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:42,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 00:54:42,847 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,901 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-07 00:54:42,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-07 00:54:42,908 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:42,908 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-07 00:54:42,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,974 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-07 00:54:42,976 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:42,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 00:54:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:43,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-07 00:54:43,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:43,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:43,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:43,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 00:54:43,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:43,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:43,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:43,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:43,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 00:54:43,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:43,010 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-07 00:54:43,014 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-07 00:54:43,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-07 00:54:43,021 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:43,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:43,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:54:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-11-07 00:54:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552441282] [2021-11-07 00:54:43,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-07 00:54:43,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-07 00:54:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2453, Invalid=3097, Unknown=0, NotChecked=0, Total=5550 [2021-11-07 00:54:43,302 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) [2021-11-07 00:54:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:43,435 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2021-11-07 00:54:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 00:54:43,436 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 [2021-11-07 00:54:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:43,438 INFO L225 Difference]: With dead ends: 58 [2021-11-07 00:54:43,438 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 00:54:43,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2585 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2453, Invalid=3097, Unknown=0, NotChecked=0, Total=5550 [2021-11-07 00:54:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 00:54:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-07 00:54:43,450 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) [2021-11-07 00:54:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-11-07 00:54:43,451 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 27 [2021-11-07 00:54:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:43,452 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-11-07 00:54:43,452 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) [2021-11-07 00:54:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-11-07 00:54:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 00:54:43,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:43,455 INFO L513 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2021-11-07 00:54:43,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:43,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-07 00:54:43,673 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1127469811, now seen corresponding path program 5 times [2021-11-07 00:54:43,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:43,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014113783] [2021-11-07 00:54:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:43,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:45,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:45,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014113783] [2021-11-07 00:54:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014113783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:45,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943035068] [2021-11-07 00:54:45,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:54:45,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:45,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:45,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:45,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c86b41-dc64-4866-872b-fa4b2286a2e6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process