./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/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_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:55:12,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:55:12,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:55:12,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:55:12,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:55:12,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:55:12,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:55:12,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:55:12,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:55:12,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:55:12,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:55:12,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:55:12,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:55:12,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:55:12,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:55:12,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:55:12,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:55:12,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:55:12,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:55:12,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:55:12,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:55:12,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:55:12,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:55:12,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:55:12,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:55:12,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:55:12,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:55:12,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:55:12,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:55:12,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:55:12,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:55:12,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:55:12,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:55:12,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:55:12,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:55:12,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:55:12,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:55:12,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:55:12,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:55:12,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:55:12,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:55:12,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 00:55:12,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:55:12,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:55:12,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:55:12,504 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:55:12,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:55:12,505 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:55:12,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:55:12,505 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:55:12,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:55:12,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:55:12,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:55:12,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:55:12,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:55:12,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:55:12,508 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:55:12,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:55:12,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:55:12,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:55:12,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:55:12,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 00:55:12,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:55:12,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:55:12,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:55:12,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 00:55:12,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 00:55:12,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 00:55:12,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:55:12,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:55:12,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:55:12,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:55:12,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:55:12,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:55:12,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:12,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:55:12,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:55:12,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:55:12,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:55:12,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:55:12,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:55:12,515 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_3a923c2b-e807-4407-b514-fb2e327a541e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2021-11-07 00:55:12,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:12,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:12,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:12,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:12,783 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:12,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/verifythis/elimination_max.c [2021-11-07 00:55:12,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/data/d329d14ea/87fd8a137a2c44daad097f5f88df215a/FLAG8ef70f62d [2021-11-07 00:55:13,298 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:13,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/sv-benchmarks/c/verifythis/elimination_max.c [2021-11-07 00:55:13,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/data/d329d14ea/87fd8a137a2c44daad097f5f88df215a/FLAG8ef70f62d [2021-11-07 00:55:13,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/data/d329d14ea/87fd8a137a2c44daad097f5f88df215a [2021-11-07 00:55:13,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:13,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:13,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:13,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:13,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:13,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:13" (1/1) ... [2021-11-07 00:55:13,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342ed1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:13, skipping insertion in model container [2021-11-07 00:55:13,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:13" (1/1) ... [2021-11-07 00:55:13,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:13,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:13,952 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_3a923c2b-e807-4407-b514-fb2e327a541e/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-07 00:55:13,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:13,981 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:55:13,994 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_3a923c2b-e807-4407-b514-fb2e327a541e/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-07 00:55:14,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:14,015 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:55:14,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14 WrapperNode [2021-11-07 00:55:14,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:14,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:14,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:55:14,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:55:14,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:14,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:55:14,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:55:14,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:55:14,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:55:14,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:55:14,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:55:14,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:55:14,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:14,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:14,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:55:14,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:55:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:55:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:55:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:55:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:55:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:55:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 00:55:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:55:14,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:55:14,694 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 00:55:14,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:14 BoogieIcfgContainer [2021-11-07 00:55:14,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:55:14,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:55:14,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:55:14,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:55:14,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:13" (1/3) ... [2021-11-07 00:55:14,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:14, skipping insertion in model container [2021-11-07 00:55:14,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (2/3) ... [2021-11-07 00:55:14,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:14, skipping insertion in model container [2021-11-07 00:55:14,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:14" (3/3) ... [2021-11-07 00:55:14,706 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-11-07 00:55:14,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:55:14,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-07 00:55:14,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:55:14,798 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 00:55:14,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-07 00:55:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 37 states have internal predecessors, (41), 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 00:55:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 00:55:14,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:14,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 00:55:14,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 139026, now seen corresponding path program 1 times [2021-11-07 00:55:14,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:14,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648233004] [2021-11-07 00:55:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:14,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:15,071 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 00:55:15,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:15,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648233004] [2021-11-07 00:55:15,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648233004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 00:55:15,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733422496] [2021-11-07 00:55:15,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:15,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:15,097 INFO L87 Difference]: Start difference. First operand has 38 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 37 states have internal predecessors, (41), 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, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 00:55:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:15,175 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-07 00:55:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-07 00:55:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:15,187 INFO L225 Difference]: With dead ends: 31 [2021-11-07 00:55:15,187 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 00:55:15,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:55:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 00:55:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 00:55:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.631578947368421) internal successors, (31), 29 states have internal predecessors, (31), 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 00:55:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-07 00:55:15,225 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 3 [2021-11-07 00:55:15,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:15,226 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-07 00:55:15,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 00:55:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-07 00:55:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 00:55:15,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:15,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 00:55:15,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:55:15,229 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 139027, now seen corresponding path program 1 times [2021-11-07 00:55:15,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:15,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331074157] [2021-11-07 00:55:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:15,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:15,431 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 00:55:15,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331074157] [2021-11-07 00:55:15,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331074157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:55:15,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695415184] [2021-11-07 00:55:15,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:15,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:15,438 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 00:55:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:15,581 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-11-07 00:55:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-07 00:55:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:15,585 INFO L225 Difference]: With dead ends: 57 [2021-11-07 00:55:15,585 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 00:55:15,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:55:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 00:55:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2021-11-07 00:55:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2021-11-07 00:55:15,600 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 3 [2021-11-07 00:55:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:15,601 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2021-11-07 00:55:15,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 00:55:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2021-11-07 00:55:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 00:55:15,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:15,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 00:55:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 00:55:15,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:15,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash 141808, now seen corresponding path program 1 times [2021-11-07 00:55:15,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:15,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737826773] [2021-11-07 00:55:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:15,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:15,703 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 00:55:15,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:15,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737826773] [2021-11-07 00:55:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737826773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:55:15,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281849095] [2021-11-07 00:55:15,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:15,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:15,707 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 00:55:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:15,843 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-11-07 00:55:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:55:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-07 00:55:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:15,846 INFO L225 Difference]: With dead ends: 56 [2021-11-07 00:55:15,846 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 00:55:15,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:55:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 00:55:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2021-11-07 00:55:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 43 states have internal predecessors, (50), 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 00:55:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-07 00:55:15,868 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 3 [2021-11-07 00:55:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:15,869 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-07 00:55:15,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 00:55:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-07 00:55:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 00:55:15,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:15,871 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 00:55:15,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 00:55:15,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 4309801, now seen corresponding path program 1 times [2021-11-07 00:55:15,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:15,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070096159] [2021-11-07 00:55:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:15,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:15,970 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 00:55:15,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:15,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070096159] [2021-11-07 00:55:15,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070096159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:55:15,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591573134] [2021-11-07 00:55:15,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:15,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:15,976 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 00:55:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:16,079 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-11-07 00:55:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-07 00:55:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:16,081 INFO L225 Difference]: With dead ends: 55 [2021-11-07 00:55:16,081 INFO L226 Difference]: Without dead ends: 55 [2021-11-07 00:55:16,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:55:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-07 00:55:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-11-07 00:55:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.5) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-11-07 00:55:16,090 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 4 [2021-11-07 00:55:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:16,091 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-11-07 00:55:16,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 00:55:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-11-07 00:55:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:55:16,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:16,093 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-07 00:55:16,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 00:55:16,094 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:16,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash -153170051, now seen corresponding path program 1 times [2021-11-07 00:55:16,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:16,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337692685] [2021-11-07 00:55:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:16,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:16,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:16,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337692685] [2021-11-07 00:55:16,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337692685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:16,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555510182] [2021-11-07 00:55:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:16,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:16,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:16,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:16,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:55:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:16,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:55:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:16,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 00:55:16,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2021-11-07 00:55:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:16,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:16,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-11-07 00:55:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:17,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555510182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:17,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576435500] [2021-11-07 00:55:17,218 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-11-07 00:55:17,219 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:55:17,223 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:55:17,228 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:55:17,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:55:17,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,261 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 00:55:17,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 00:55:17,265 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 00:55:17,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-07 00:55:17,289 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_43|], 36=[|v_#valid_52|]} [2021-11-07 00:55:17,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:17,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:17,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:17,304 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-07 00:55:17,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:17,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:17,346 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:17,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:17,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:17,359 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 54 treesize of output 63 [2021-11-07 00:55:17,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:17,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:17,444 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:17,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-07 00:55:17,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:17,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:17,483 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,506 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.0 percent of original size [2021-11-07 00:55:17,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-07 00:55:17,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:55:17,512 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:681, output treesize:191 [2021-11-07 00:55:17,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,552 INFO L185 QuantifierPusher]: treesize reduction 5, result has 98.2 percent of original size 266 [2021-11-07 00:55:17,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,708 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:17,727 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:17,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:17,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:17,778 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:17,790 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:17,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:17,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:17,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:17,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:17,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:17,886 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:55:18,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:55:18,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:55:18,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2021-11-07 00:55:18,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658208919] [2021-11-07 00:55:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 00:55:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 00:55:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-07 00:55:18,781 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:19,144 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2021-11-07 00:55:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:55:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 00:55:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:19,145 INFO L225 Difference]: With dead ends: 57 [2021-11-07 00:55:19,145 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 00:55:19,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-11-07 00:55:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 00:55:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-11-07 00:55:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 45 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 00:55:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-11-07 00:55:19,150 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 6 [2021-11-07 00:55:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:19,150 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-11-07 00:55:19,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-11-07 00:55:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:55:19,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:19,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:55:19,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:19,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:19,362 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -153167270, now seen corresponding path program 1 times [2021-11-07 00:55:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:19,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403864264] [2021-11-07 00:55:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:19,471 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 00:55:19,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:19,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403864264] [2021-11-07 00:55:19,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403864264] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:19,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659001565] [2021-11-07 00:55:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:19,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:19,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:19,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:19,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:55:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:19,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:55:19,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:19,651 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 00:55:19,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:19,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-07 00:55:19,814 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 00:55:19,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659001565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:19,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516170270] [2021-11-07 00:55:19,817 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 00:55:19,817 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:55:19,817 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:55:19,817 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:55:19,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:55:19,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,831 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:19,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 00:55:19,833 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:19,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 00:55:19,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:19,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 00:55:19,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-07 00:55:19,849 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_44|], 36=[|v_#valid_53|]} [2021-11-07 00:55:19,859 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:19,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:19,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:19,861 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:19,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-07 00:55:19,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:19,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:19,901 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:19,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:19,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:19,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:19,912 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:19,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:19,923 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:19,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 54 treesize of output 63 [2021-11-07 00:55:19,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:19,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:19,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:19,972 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:19,995 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:20,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-07 00:55:20,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:20,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:20,011 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:20,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,042 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.0 percent of original size [2021-11-07 00:55:20,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-07 00:55:20,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:55:20,046 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:681, output treesize:191 [2021-11-07 00:55:20,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,073 INFO L185 QuantifierPusher]: treesize reduction 5, result has 98.2 percent of original size 266 [2021-11-07 00:55:20,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,140 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:20,150 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:20,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:20,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:20,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:20,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:20,183 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:20,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:20,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:20,197 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:20,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:20,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:20,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:20,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:20,314 INFO L180 QuantifierPusher]: treesize reduction 49, result has 72.6 percent of original size [2021-11-07 00:55:20,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-07 00:55:20,323 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:55:21,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:55:21,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:55:21,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2021-11-07 00:55:21,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484081713] [2021-11-07 00:55:21,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:55:21,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:55:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:55:21,300 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:21,481 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-07 00:55:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:55:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 00:55:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:21,482 INFO L225 Difference]: With dead ends: 56 [2021-11-07 00:55:21,483 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 00:55:21,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:55:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 00:55:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2021-11-07 00:55:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 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 00:55:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-07 00:55:21,486 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 6 [2021-11-07 00:55:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:21,487 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-07 00:55:21,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-07 00:55:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:55:21,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:21,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:55:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:21,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 00:55:21,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -70328907, now seen corresponding path program 1 times [2021-11-07 00:55:21,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:21,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100061898] [2021-11-07 00:55:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:21,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:21,795 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 00:55:21,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:21,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100061898] [2021-11-07 00:55:21,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100061898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:21,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:21,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 00:55:21,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831771984] [2021-11-07 00:55:21,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:55:21,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:55:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:55:21,798 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 00:55:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:21,914 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-11-07 00:55:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:55:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 00:55:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:21,916 INFO L225 Difference]: With dead ends: 54 [2021-11-07 00:55:21,917 INFO L226 Difference]: Without dead ends: 54 [2021-11-07 00:55:21,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-07 00:55:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-11-07 00:55:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 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 00:55:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-11-07 00:55:21,929 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 6 [2021-11-07 00:55:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:21,929 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-11-07 00:55:21,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 00:55:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-11-07 00:55:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 00:55:21,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:21,931 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-11-07 00:55:21,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 00:55:21,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash -453304321, now seen corresponding path program 1 times [2021-11-07 00:55:21,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:21,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291366298] [2021-11-07 00:55:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:21,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:22,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291366298] [2021-11-07 00:55:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291366298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583762856] [2021-11-07 00:55:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:22,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:22,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:22,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:22,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 00:55:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:22,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:55:22,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:22,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2021-11-07 00:55:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:22,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:22,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583762856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:22,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:55:22,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 11 [2021-11-07 00:55:22,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703344178] [2021-11-07 00:55:22,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:55:22,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:55:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:55:22,435 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 00:55:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:22,546 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-11-07 00:55:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:55:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 00:55:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:22,549 INFO L225 Difference]: With dead ends: 53 [2021-11-07 00:55:22,550 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 00:55:22,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:55:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 00:55:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2021-11-07 00:55:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3) internal successors, (39), 35 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 00:55:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-07 00:55:22,562 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 7 [2021-11-07 00:55:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:22,565 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-07 00:55:22,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 00:55:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-07 00:55:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 00:55:22,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:22,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:22,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:22,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 00:55:22,774 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash -453218088, now seen corresponding path program 1 times [2021-11-07 00:55:22,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:22,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462634527] [2021-11-07 00:55:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:22,935 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 00:55:22,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:22,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462634527] [2021-11-07 00:55:22,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462634527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:22,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943958077] [2021-11-07 00:55:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:22,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:22,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:22,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 00:55:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:23,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:55:23,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:23,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 00:55:23,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2021-11-07 00:55:23,285 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 00:55:23,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:23,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2021-11-07 00:55:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:23,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943958077] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:23,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:55:23,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 13 [2021-11-07 00:55:23,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488519362] [2021-11-07 00:55:23,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:55:23,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:55:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:55:23,597 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:23,724 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-11-07 00:55:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:55:23,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 00:55:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:23,725 INFO L225 Difference]: With dead ends: 35 [2021-11-07 00:55:23,726 INFO L226 Difference]: Without dead ends: 35 [2021-11-07 00:55:23,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-07 00:55:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-07 00:55:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-11-07 00:55:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 29 states have internal predecessors, (32), 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 00:55:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-11-07 00:55:23,728 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 7 [2021-11-07 00:55:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:23,728 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-11-07 00:55:23,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-11-07 00:55:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:55:23,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:23,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:23,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:23,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:23,946 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:23,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1750835957, now seen corresponding path program 1 times [2021-11-07 00:55:23,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:23,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336812261] [2021-11-07 00:55:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:23,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:24,020 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 00:55:24,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:24,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336812261] [2021-11-07 00:55:24,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336812261] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:24,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749341520] [2021-11-07 00:55:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:24,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:24,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:24,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 00:55:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:24,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:55:24,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:24,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 00:55:24,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2021-11-07 00:55:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:24,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:28,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749341520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:28,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:55:28,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 10 [2021-11-07 00:55:28,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268975303] [2021-11-07 00:55:28,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:55:28,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:55:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:55:28,382 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 00:55:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:28,442 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-11-07 00:55:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:55:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 00:55:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:28,443 INFO L225 Difference]: With dead ends: 29 [2021-11-07 00:55:28,443 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 00:55:28,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:55:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 00:55:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-07 00:55:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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 00:55:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-07 00:55:28,445 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2021-11-07 00:55:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:28,446 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-07 00:55:28,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 00:55:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-07 00:55:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:55:28,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:28,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:28,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:28,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-07 00:55:28,647 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1756600462, now seen corresponding path program 1 times [2021-11-07 00:55:28,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:28,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147500688] [2021-11-07 00:55:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:28,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:28,739 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 00:55:28,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:28,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147500688] [2021-11-07 00:55:28,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147500688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:28,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:28,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 00:55:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915781800] [2021-11-07 00:55:28,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:55:28,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:55:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:55:28,744 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 00:55:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:28,841 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-11-07 00:55:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:55:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-11-07 00:55:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:28,842 INFO L225 Difference]: With dead ends: 45 [2021-11-07 00:55:28,842 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 00:55:28,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:55:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 00:55:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-11-07 00:55:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 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 00:55:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-07 00:55:28,845 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2021-11-07 00:55:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:28,845 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-07 00:55:28,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 00:55:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-07 00:55:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:55:28,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:28,846 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:28,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 00:55:28,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 171039075, now seen corresponding path program 1 times [2021-11-07 00:55:28,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:28,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221583652] [2021-11-07 00:55:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:28,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:28,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:28,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221583652] [2021-11-07 00:55:28,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221583652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:28,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099879992] [2021-11-07 00:55:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:28,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:28,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 00:55:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:29,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:55:29,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:29,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:29,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099879992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:29,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:55:29,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2021-11-07 00:55:29,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200616367] [2021-11-07 00:55:29,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:55:29,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:55:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:55:29,200 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:29,289 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-11-07 00:55:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:55:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 00:55:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:29,291 INFO L225 Difference]: With dead ends: 43 [2021-11-07 00:55:29,291 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 00:55:29,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:55:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 00:55:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2021-11-07 00:55:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 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 00:55:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-07 00:55:29,293 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2021-11-07 00:55:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:29,293 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-07 00:55:29,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-11-07 00:55:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:55:29,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:29,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:29,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:29,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:29,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash 875970296, now seen corresponding path program 1 times [2021-11-07 00:55:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:29,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70785052] [2021-11-07 00:55:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:29,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:29,616 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 00:55:29,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:29,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70785052] [2021-11-07 00:55:29,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70785052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:29,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858841511] [2021-11-07 00:55:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:29,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:29,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:29,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:29,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 00:55:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:29,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 00:55:29,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:29,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 00:55:29,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-07 00:55:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:29,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:30,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858841511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:30,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:55:30,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 13 [2021-11-07 00:55:30,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613083943] [2021-11-07 00:55:30,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:55:30,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:55:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:55:30,102 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:30,202 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-11-07 00:55:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:55:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 00:55:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:30,203 INFO L225 Difference]: With dead ends: 36 [2021-11-07 00:55:30,203 INFO L226 Difference]: Without dead ends: 36 [2021-11-07 00:55:30,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:55:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-07 00:55:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-11-07 00:55:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 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 00:55:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-07 00:55:30,206 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 14 [2021-11-07 00:55:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:30,206 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-07 00:55:30,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:30,206 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-07 00:55:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:55:30,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:30,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:30,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 00:55:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:30,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1007287023, now seen corresponding path program 1 times [2021-11-07 00:55:30,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:30,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590539190] [2021-11-07 00:55:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:30,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:30,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:30,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590539190] [2021-11-07 00:55:30,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590539190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:30,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:30,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 00:55:30,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581457270] [2021-11-07 00:55:30,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:30,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:30,459 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 00:55:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:30,471 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-07 00:55:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 00:55:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:30,471 INFO L225 Difference]: With dead ends: 32 [2021-11-07 00:55:30,472 INFO L226 Difference]: Without dead ends: 32 [2021-11-07 00:55:30,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:55:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-07 00:55:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-07 00:55:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 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 00:55:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-07 00:55:30,473 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 14 [2021-11-07 00:55:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:30,474 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-07 00:55:30,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 00:55:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-07 00:55:30,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:55:30,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:30,475 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:30,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 00:55:30,475 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash -5993139, now seen corresponding path program 1 times [2021-11-07 00:55:30,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:30,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507770874] [2021-11-07 00:55:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:30,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:30,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:30,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507770874] [2021-11-07 00:55:30,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507770874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:55:30,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996455670] [2021-11-07 00:55:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:30,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:30,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:30,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:30,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 00:55:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:30,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:55:30,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:30,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:31,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 00:55:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:31,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996455670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:31,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076976270] [2021-11-07 00:55:31,162 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:55:31,162 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:55:31,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:55:31,162 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:55:31,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:55:31,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,174 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 00:55:31,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 00:55:31,178 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 00:55:31,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-07 00:55:31,191 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_45|], 36=[|v_#valid_54|]} [2021-11-07 00:55:31,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:31,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:31,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:31,202 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:55:31,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:31,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:55:31,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-07 00:55:31,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:31,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:31,240 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 54 treesize of output 63 [2021-11-07 00:55:31,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:31,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 00:55:31,289 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:31,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-07 00:55:31,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:31,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 00:55:31,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,331 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.0 percent of original size [2021-11-07 00:55:31,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-07 00:55:31,335 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:55:31,335 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:681, output treesize:191 [2021-11-07 00:55:31,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,353 INFO L185 QuantifierPusher]: treesize reduction 5, result has 98.2 percent of original size 266 [2021-11-07 00:55:31,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,425 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:31,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:31,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:31,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:31,473 INFO L180 QuantifierPusher]: treesize reduction 48, result has 79.0 percent of original size [2021-11-07 00:55:31,480 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:55:31,485 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:55:31,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-07 00:55:31,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,572 INFO L180 QuantifierPusher]: treesize reduction 49, result has 72.6 percent of original size [2021-11-07 00:55:31,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-07 00:55:31,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,599 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,605 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 00:55:31,608 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-07 00:55:31,611 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:55:31,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-07 00:55:31,618 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-07 00:55:31,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,629 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,631 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:31,634 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 00:55:31,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-07 00:55:31,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 00:55:31,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-07 00:55:31,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-07 00:55:31,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-07 00:55:31,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-07 00:55:31,717 INFO L180 QuantifierPusher]: treesize reduction 20, result has 98.2 percent of original size [2021-11-07 00:55:31,719 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,723 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:31,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,729 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,732 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 00:55:31,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 567 [2021-11-07 00:55:31,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,790 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,794 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:31,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1267 [2021-11-07 00:55:31,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:31,959 INFO L180 QuantifierPusher]: treesize reduction 32, result has 98.7 percent of original size [2021-11-07 00:55:31,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 00:55:31,968 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:31,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:31,981 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,984 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 00:55:31,990 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:31,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:31,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:32,007 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:32,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:32,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:55:32,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:55:32,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:32,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 00:55:32,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1172 [2021-11-07 00:55:32,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:32,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-11-07 00:55:32,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:55:32,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:32,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-07 00:55:32,083 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:55:33,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:55:33,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:55:33,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2021-11-07 00:55:33,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68539424] [2021-11-07 00:55:33,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 00:55:33,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 00:55:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-11-07 00:55:33,795 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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 00:55:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:34,298 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-11-07 00:55:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:55:34,299 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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 16 [2021-11-07 00:55:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:34,299 INFO L225 Difference]: With dead ends: 46 [2021-11-07 00:55:34,299 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 00:55:34,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 00:55:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 00:55:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2021-11-07 00:55:34,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 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 00:55:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-07 00:55:34,302 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 16 [2021-11-07 00:55:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:34,303 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-07 00:55:34,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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 00:55:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-11-07 00:55:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:55:34,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:34,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:34,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:34,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-07 00:55:34,504 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-07 00:55:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1635191442, now seen corresponding path program 1 times [2021-11-07 00:55:34,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:34,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703747251] [2021-11-07 00:55:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:34,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:55:34,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:55:34,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703747251] [2021-11-07 00:55:34,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703747251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:34,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:34,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:55:34,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078243267] [2021-11-07 00:55:34,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:34,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:55:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:34,594 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 00:55:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:34,623 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-07 00:55:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-11-07 00:55:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:34,624 INFO L225 Difference]: With dead ends: 34 [2021-11-07 00:55:34,624 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 00:55:34,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:55:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 00:55:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 00:55:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 00:55:34,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-07 00:55:34,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:34,626 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 00:55:34,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 00:55:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 00:55:34,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 00:55:34,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-07 00:55:34,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-07 00:55:34,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-07 00:55:34,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-07 00:55:34,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-11-07 00:55:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 00:55:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 00:55:34,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 00:55:34,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-07 00:55:34,635 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:34,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:55:34,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:55:34 BoogieIcfgContainer [2021-11-07 00:55:34,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:55:34,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:55:34,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:55:34,640 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:55:34,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:14" (3/4) ... [2021-11-07 00:55:34,644 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 00:55:34,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-07 00:55:34,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 00:55:34,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-07 00:55:34,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 00:55:34,696 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 00:55:34,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:55:34,697 INFO L168 Benchmark]: Toolchain (without parser) took 21008.06 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 66.7 MB in the beginning and 55.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,697 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:34,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.80 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 74.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:34,698 INFO L168 Benchmark]: Boogie Preprocessor took 28.47 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,699 INFO L168 Benchmark]: RCFGBuilder took 611.04 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 54.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,699 INFO L168 Benchmark]: TraceAbstraction took 19940.45 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 53.5 MB in the beginning and 58.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 71.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,699 INFO L168 Benchmark]: Witness Printer took 56.31 ms. Allocated memory is still 174.1 MB. Free memory was 58.8 MB in the beginning and 55.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:34,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.80 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 74.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.47 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 611.04 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 54.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19940.45 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 53.5 MB in the beginning and 58.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 71.7 MB. Max. memory is 16.1 GB. * Witness Printer took 56.31 ms. Allocated memory is still 174.1 MB. Free memory was 58.8 MB in the beginning and 55.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 999 SDslu, 400 SDs, 0 SdLazy, 1089 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 145 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 262 ConstructedInterpolants, 22 QuantifiedInterpolants, 3527 SizeOfPredicates, 76 NumberOfNonLiveVariables, 814 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 32 InterpolantComputations, 17 PerfectInterpolantSequences, 20/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 00:55:34,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a923c2b-e807-4407-b514-fb2e327a541e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE