./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:59:36,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:59:36,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:59:36,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:59:36,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:59:36,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:59:36,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:59:36,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:59:36,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:59:36,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:59:36,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:59:36,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:59:36,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:59:36,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:59:36,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:59:36,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:59:36,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:59:36,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:59:36,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:59:36,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:59:36,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:59:36,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:59:36,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:59:36,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:59:36,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:59:36,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:59:36,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:59:36,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:59:36,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:59:36,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:59:36,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:59:36,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:59:36,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:59:36,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:59:36,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:59:36,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:59:36,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:59:36,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:59:36,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:59:36,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:59:36,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:59:36,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:59:36,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:59:36,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:59:36,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:59:36,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:59:36,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:59:36,482 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:59:36,483 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:59:36,483 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:59:36,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:59:36,483 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:59:36,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:59:36,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:59:36,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:59:36,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:59:36,486 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:59:36,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:59:36,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:59:36,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:59:36,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:59:36,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:59:36,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:59:36,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:59:36,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:59:36,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:59:36,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:59:36,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:59:36,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:59:36,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:59:36,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:59:36,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:59:36,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:36,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:59:36,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:59:36,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:59:36,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:59:36,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:59:36,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:59:36,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:59:36,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:59:36,495 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_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 [2021-10-24 10:59:36,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:59:36,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:59:36,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:59:36,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:59:36,851 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:59:36,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-10-24 10:59:36,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/data/845d425dc/cccd5ac233ce4b4991e8deaecf72edad/FLAGfa986558b [2021-10-24 10:59:37,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:59:37,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-10-24 10:59:37,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/data/845d425dc/cccd5ac233ce4b4991e8deaecf72edad/FLAGfa986558b [2021-10-24 10:59:37,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/data/845d425dc/cccd5ac233ce4b4991e8deaecf72edad [2021-10-24 10:59:37,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:59:37,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:59:37,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:37,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:59:37,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:59:37,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:37" (1/1) ... [2021-10-24 10:59:37,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4e56a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:37, skipping insertion in model container [2021-10-24 10:59:37,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:37" (1/1) ... [2021-10-24 10:59:37,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:59:38,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:59:38,441 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_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-10-24 10:59:38,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:38,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:59:38,661 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_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-10-24 10:59:38,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:38,696 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:59:38,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38 WrapperNode [2021-10-24 10:59:38,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:38,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:38,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:59:38,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:59:38,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:38,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:59:38,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:59:38,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:59:38,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:59:38,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:59:38,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:59:38,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:59:38,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (1/1) ... [2021-10-24 10:59:38,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:38,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:59:38,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:59:38,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:59:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:59:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:59:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:59:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:59:41,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:59:41,297 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:59:41,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:41 BoogieIcfgContainer [2021-10-24 10:59:41,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:59:41,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:59:41,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:59:41,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:59:41,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:59:37" (1/3) ... [2021-10-24 10:59:41,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:41, skipping insertion in model container [2021-10-24 10:59:41,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:38" (2/3) ... [2021-10-24 10:59:41,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:41, skipping insertion in model container [2021-10-24 10:59:41,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:41" (3/3) ... [2021-10-24 10:59:41,313 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2021-10-24 10:59:41,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:59:41,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:59:41,415 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:59:41,425 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:59:41,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:59:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 10:59:41,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:41,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:41,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1243323827, now seen corresponding path program 1 times [2021-10-24 10:59:41,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:41,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002365100] [2021-10-24 10:59:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:41,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:41,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:41,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002365100] [2021-10-24 10:59:41,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002365100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:41,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:41,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:59:41,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379835529] [2021-10-24 10:59:42,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:42,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:42,024 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:42,521 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-24 10:59:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-10-24 10:59:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:42,545 INFO L225 Difference]: With dead ends: 251 [2021-10-24 10:59:42,546 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 10:59:42,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 10:59:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-24 10:59:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-10-24 10:59:42,610 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-10-24 10:59:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:42,611 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-10-24 10:59:42,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-10-24 10:59:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-24 10:59:42,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:42,618 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:42,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:59:42,618 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1692948104, now seen corresponding path program 1 times [2021-10-24 10:59:42,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:42,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961296796] [2021-10-24 10:59:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:42,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:42,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:42,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961296796] [2021-10-24 10:59:42,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961296796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:42,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:42,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:59:42,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191285780] [2021-10-24 10:59:42,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:42,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:42,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:42,808 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:43,344 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-10-24 10:59:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:43,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-10-24 10:59:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:43,347 INFO L225 Difference]: With dead ends: 405 [2021-10-24 10:59:43,347 INFO L226 Difference]: Without dead ends: 243 [2021-10-24 10:59:43,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-24 10:59:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-24 10:59:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-10-24 10:59:43,386 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-10-24 10:59:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:43,387 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-10-24 10:59:43,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-10-24 10:59:43,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-24 10:59:43,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:43,393 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:43,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:59:43,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:43,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:43,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1724804465, now seen corresponding path program 1 times [2021-10-24 10:59:43,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:43,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025260306] [2021-10-24 10:59:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:43,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:43,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:43,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025260306] [2021-10-24 10:59:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025260306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:43,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:43,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:59:43,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118642562] [2021-10-24 10:59:43,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:43,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:43,507 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:43,897 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-10-24 10:59:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2021-10-24 10:59:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:43,906 INFO L225 Difference]: With dead ends: 725 [2021-10-24 10:59:43,906 INFO L226 Difference]: Without dead ends: 483 [2021-10-24 10:59:43,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-24 10:59:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-24 10:59:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-10-24 10:59:43,976 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-10-24 10:59:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:43,979 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-10-24 10:59:43,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-10-24 10:59:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-24 10:59:43,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:43,994 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:43,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:59:43,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1929398288, now seen corresponding path program 1 times [2021-10-24 10:59:43,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:43,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577119242] [2021-10-24 10:59:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:43,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:44,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:44,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577119242] [2021-10-24 10:59:44,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577119242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:44,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:44,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:59:44,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776179336] [2021-10-24 10:59:44,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:44,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:44,143 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:44,540 INFO L93 Difference]: Finished difference Result 1445 states and 2019 transitions. [2021-10-24 10:59:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-10-24 10:59:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:44,548 INFO L225 Difference]: With dead ends: 1445 [2021-10-24 10:59:44,548 INFO L226 Difference]: Without dead ends: 963 [2021-10-24 10:59:44,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-24 10:59:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-24 10:59:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.3295218295218296) internal successors, (1279), 962 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1279 transitions. [2021-10-24 10:59:44,615 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1279 transitions. Word has length 110 [2021-10-24 10:59:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:44,619 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1279 transitions. [2021-10-24 10:59:44,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1279 transitions. [2021-10-24 10:59:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-24 10:59:44,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:44,626 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:44,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:59:44,627 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1523203554, now seen corresponding path program 1 times [2021-10-24 10:59:44,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:44,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123687239] [2021-10-24 10:59:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:44,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-24 10:59:44,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:44,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123687239] [2021-10-24 10:59:44,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123687239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:44,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:44,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:59:44,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668659431] [2021-10-24 10:59:44,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:44,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:44,708 INFO L87 Difference]: Start difference. First operand 963 states and 1279 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:45,112 INFO L93 Difference]: Finished difference Result 2165 states and 2847 transitions. [2021-10-24 10:59:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 124 [2021-10-24 10:59:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:45,122 INFO L225 Difference]: With dead ends: 2165 [2021-10-24 10:59:45,122 INFO L226 Difference]: Without dead ends: 1043 [2021-10-24 10:59:45,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-24 10:59:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2021-10-24 10:59:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.20997920997921) internal successors, (1164), 962 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1164 transitions. [2021-10-24 10:59:45,168 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1164 transitions. Word has length 124 [2021-10-24 10:59:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:45,169 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1164 transitions. [2021-10-24 10:59:45,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1164 transitions. [2021-10-24 10:59:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-24 10:59:45,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:45,174 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:45,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:59:45,175 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash 187507048, now seen corresponding path program 1 times [2021-10-24 10:59:45,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:45,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237139368] [2021-10-24 10:59:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:45,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:45,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:45,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237139368] [2021-10-24 10:59:45,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237139368] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:45,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:45,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:59:45,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213303940] [2021-10-24 10:59:45,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:45,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:45,349 INFO L87 Difference]: Start difference. First operand 963 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:45,779 INFO L93 Difference]: Finished difference Result 2565 states and 3091 transitions. [2021-10-24 10:59:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:45,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2021-10-24 10:59:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:45,791 INFO L225 Difference]: With dead ends: 2565 [2021-10-24 10:59:45,791 INFO L226 Difference]: Without dead ends: 1523 [2021-10-24 10:59:45,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-24 10:59:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1363. [2021-10-24 10:59:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.1666666666666667) internal successors, (1589), 1362 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1589 transitions. [2021-10-24 10:59:45,847 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1589 transitions. Word has length 127 [2021-10-24 10:59:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:45,848 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1589 transitions. [2021-10-24 10:59:45,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1589 transitions. [2021-10-24 10:59:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-24 10:59:45,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:45,853 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:45,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:59:45,854 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1594129247, now seen corresponding path program 1 times [2021-10-24 10:59:45,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:45,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850369686] [2021-10-24 10:59:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:45,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-24 10:59:46,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:46,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850369686] [2021-10-24 10:59:46,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850369686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:46,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:46,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:59:46,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020474457] [2021-10-24 10:59:46,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:46,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:46,007 INFO L87 Difference]: Start difference. First operand 1363 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:46,177 INFO L93 Difference]: Finished difference Result 2405 states and 2813 transitions. [2021-10-24 10:59:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 139 [2021-10-24 10:59:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:46,183 INFO L225 Difference]: With dead ends: 2405 [2021-10-24 10:59:46,183 INFO L226 Difference]: Without dead ends: 963 [2021-10-24 10:59:46,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:59:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-24 10:59:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2021-10-24 10:59:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.1371571072319202) internal successors, (912), 802 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 912 transitions. [2021-10-24 10:59:46,211 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 912 transitions. Word has length 139 [2021-10-24 10:59:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:46,211 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 912 transitions. [2021-10-24 10:59:46,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 912 transitions. [2021-10-24 10:59:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-24 10:59:46,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:46,215 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:46,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:59:46,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash -671312997, now seen corresponding path program 1 times [2021-10-24 10:59:46,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:46,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393510345] [2021-10-24 10:59:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:46,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:46,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:46,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393510345] [2021-10-24 10:59:46,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393510345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:59:46,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775296092] [2021-10-24 10:59:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:46,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:59:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:59:46,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:59:46,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:59:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:46,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:59:46,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:59:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-24 10:59:47,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:59:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-24 10:59:47,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775296092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:47,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:59:47,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-24 10:59:47,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40680133] [2021-10-24 10:59:47,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:59:47,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:59:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:59:47,706 INFO L87 Difference]: Start difference. First operand 803 states and 912 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:47,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:47,926 INFO L93 Difference]: Finished difference Result 883 states and 999 transitions. [2021-10-24 10:59:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:59:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 154 [2021-10-24 10:59:47,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:47,927 INFO L225 Difference]: With dead ends: 883 [2021-10-24 10:59:47,927 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:59:47,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:59:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:59:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:59:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:59:47,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2021-10-24 10:59:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:47,930 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:59:47,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:59:47,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:59:47,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:59:47,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:59:48,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-24 10:59:48,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:59:48,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:48,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:48,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:48,419 INFO L857 garLoopResultBuilder]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:59:48,419 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L500(line 500) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-24 10:59:48,420 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-24 10:59:48,421 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-24 10:59:48,422 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-24 10:59:48,423 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-24 10:59:48,424 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-24 10:59:48,425 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-24 10:59:48,426 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= 10 ~a28~0)) (.cse4 (<= ~a28~0 10)) (.cse2 (<= ~a28~0 7)) (.cse6 (= ~a25~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse5 (= ~a19~0 1)) (.cse7 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse4 .cse5) (and .cse3 .cse1 .cse4) (and .cse6 .cse1 .cse4) (and .cse0 .cse1 .cse4 .cse7) (and .cse6 .cse5 .cse7 .cse2) (and .cse6 .cse0 .cse1 .cse5 .cse7))) [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-24 10:59:48,427 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-24 10:59:48,428 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-24 10:59:48,428 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:59:48,435 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-24 10:59:48,436 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-24 10:59:48,436 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= 10 ~a28~0)) (.cse4 (<= ~a28~0 10)) (.cse2 (<= ~a28~0 7)) (.cse6 (= ~a25~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse5 (= ~a19~0 1)) (.cse7 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse4 .cse5) (and .cse3 .cse1 .cse4) (and .cse6 .cse1 .cse4) (and .cse0 .cse1 .cse4 .cse7) (and .cse6 .cse5 .cse7 .cse2) (and .cse6 .cse0 .cse1 .cse5 .cse7))) [2021-10-24 10:59:48,436 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-24 10:59:48,436 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-24 10:59:48,437 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-24 10:59:48,437 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-24 10:59:48,437 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-24 10:59:48,437 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-24 10:59:48,437 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-24 10:59:48,438 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-24 10:59:48,438 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-24 10:59:48,438 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-24 10:59:48,438 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-24 10:59:48,439 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-24 10:59:48,444 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:59:48,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:59:48 BoogieIcfgContainer [2021-10-24 10:59:48,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:59:48,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:59:48,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:59:48,482 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:59:48,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:41" (3/4) ... [2021-10-24 10:59:48,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:59:48,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-24 10:59:48,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-24 10:59:48,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:59:48,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:59:48,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:59:48,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:59:48,696 INFO L168 Benchmark]: Toolchain (without parser) took 10756.79 ms. Allocated memory was 94.4 MB in the beginning and 216.0 MB in the end (delta: 121.6 MB). Free memory was 56.3 MB in the beginning and 174.2 MB in the end (delta: -117.9 MB). Peak memory consumption was 117.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,696 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:48,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.68 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 73.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.26 ms. Allocated memory is still 117.4 MB. Free memory was 73.6 MB in the beginning and 68.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,698 INFO L168 Benchmark]: Boogie Preprocessor took 80.98 ms. Allocated memory is still 117.4 MB. Free memory was 68.2 MB in the beginning and 64.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,698 INFO L168 Benchmark]: RCFGBuilder took 2392.39 ms. Allocated memory is still 117.4 MB. Free memory was 64.0 MB in the beginning and 43.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,698 INFO L168 Benchmark]: TraceAbstraction took 7177.09 ms. Allocated memory was 117.4 MB in the beginning and 216.0 MB in the end (delta: 98.6 MB). Free memory was 42.5 MB in the beginning and 68.5 MB in the end (delta: -26.0 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,699 INFO L168 Benchmark]: Witness Printer took 213.30 ms. Allocated memory is still 216.0 MB. Free memory was 67.4 MB in the beginning and 174.2 MB in the end (delta: -106.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:48,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 762.68 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 73.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.26 ms. Allocated memory is still 117.4 MB. Free memory was 73.6 MB in the beginning and 68.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.98 ms. Allocated memory is still 117.4 MB. Free memory was 68.2 MB in the beginning and 64.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2392.39 ms. Allocated memory is still 117.4 MB. Free memory was 64.0 MB in the beginning and 43.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7177.09 ms. Allocated memory was 117.4 MB in the beginning and 216.0 MB in the end (delta: 98.6 MB). Free memory was 42.5 MB in the beginning and 68.5 MB in the end (delta: -26.0 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. * Witness Printer took 213.30 ms. Allocated memory is still 216.0 MB. Free memory was 67.4 MB in the beginning and 174.2 MB in the end (delta: -106.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 500]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7035.8ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 64.0ms, AutomataDifference: 3167.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 258.3ms, InitialAbstractionConstructionTime: 17.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 474 SDtfs, 330 SDslu, 37 SDs, 0 SdLazy, 1662 SolverSat, 469 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2090.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 331.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 400 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 199 HoareAnnotationTreeSize, 3 FomulaSimplifications, 432 FormulaSimplificationTreeSizeReduction, 44.3ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 206.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 106.3ms SsaConstructionTime, 448.9ms SatisfiabilityAnalysisTime, 2061.0ms InterpolantComputationTime, 1068 NumberOfCodeBlocks, 1068 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1212 ConstructedInterpolants, 0 QuantifiedInterpolants, 4884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 475/491 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a11 == 1))) || (((a25 == 1 && a19 == 1) && !(a11 == 1)) && a28 <= 7)) || ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) && !(a11 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a11 == 1))) || (((a25 == 1 && a19 == 1) && !(a11 == 1)) && a28 <= 7)) || ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) && !(a11 == 1)) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:59:48,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f744d63e-2b46-4cc4-b3b0-c128b0251bd1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...