./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c -s /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan --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 601109ddd57cf630523568b284ec5251e7a82dbd .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:17:53,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:17:53,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:17:53,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:17:53,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:17:53,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:17:53,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:17:53,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:17:53,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:17:53,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:17:53,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:17:53,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:17:53,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:17:53,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:17:53,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:17:53,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:17:53,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:17:53,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:17:53,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:17:53,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:17:53,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:17:53,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:17:53,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:17:53,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:17:53,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:17:53,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:17:53,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:17:53,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:17:53,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:17:53,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:17:53,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:17:53,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:17:53,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:17:53,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:17:53,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:17:53,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:17:53,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:17:53,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:17:53,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:17:53,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:17:53,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:17:53,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:17:53,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:17:53,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:17:53,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:17:53,455 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:17:53,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:17:53,455 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:17:53,456 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:17:53,456 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:17:53,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:17:53,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:17:53,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:17:53,457 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:17:53,457 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:17:53,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:17:53,457 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:17:53,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:17:53,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:17:53,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:17:53,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:17:53,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:17:53,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:17:53,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:17:53,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:17:53,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:17:53,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:17:53,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:17:53,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:17:53,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:17:53,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:17:53,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:17:53,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:17:53,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:17:53,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:17:53,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:17:53,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:17:53,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:17:53,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:17:53,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:17:53,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:17:53,463 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-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601109ddd57cf630523568b284ec5251e7a82dbd [2020-12-09 11:17:53,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:17:53,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:17:53,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:17:53,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:17:53,699 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:17:53,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-12-09 11:17:53,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/data/216a0f0f7/874eadcdefca4a75b97fbd0a0d01dfc3/FLAG5f9585246 [2020-12-09 11:17:54,203 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:17:54,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-12-09 11:17:54,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/data/216a0f0f7/874eadcdefca4a75b97fbd0a0d01dfc3/FLAG5f9585246 [2020-12-09 11:17:54,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/data/216a0f0f7/874eadcdefca4a75b97fbd0a0d01dfc3 [2020-12-09 11:17:54,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:17:54,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:17:54,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:17:54,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:17:54,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:17:54,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abb6848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54, skipping insertion in model container [2020-12-09 11:17:54,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:17:54,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:17:54,566 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2020-12-09 11:17:54,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:17:54,609 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:17:54,678 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2020-12-09 11:17:54,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:17:54,708 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:17:54,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54 WrapperNode [2020-12-09 11:17:54,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:17:54,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:17:54,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:17:54,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:17:54,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:17:54,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:17:54,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:17:54,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:17:54,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... [2020-12-09 11:17:54,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:17:54,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:17:54,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:17:54,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:17:54,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:17:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:17:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:17:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:17:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:17:56,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:17:56,188 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 11:17:56,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:17:56 BoogieIcfgContainer [2020-12-09 11:17:56,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:17:56,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:17:56,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:17:56,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:17:56,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:17:54" (1/3) ... [2020-12-09 11:17:56,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1760acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:17:56, skipping insertion in model container [2020-12-09 11:17:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:17:54" (2/3) ... [2020-12-09 11:17:56,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1760acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:17:56, skipping insertion in model container [2020-12-09 11:17:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:17:56" (3/3) ... [2020-12-09 11:17:56,198 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2020-12-09 11:17:56,211 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:17:56,215 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:17:56,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:17:56,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:17:56,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:17:56,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:17:56,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:17:56,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:17:56,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:17:56,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:17:56,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:17:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 11:17:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 11:17:56,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:56,287 INFO L422 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] [2020-12-09 11:17:56,288 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1806915416, now seen corresponding path program 1 times [2020-12-09 11:17:56,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:56,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252791483] [2020-12-09 11:17:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:17:56,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252791483] [2020-12-09 11:17:56,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:56,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:17:56,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178993442] [2020-12-09 11:17:56,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:17:56,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:17:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:56,614 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 11:17:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:56,970 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 11:17:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:17:56,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 11:17:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:56,983 INFO L225 Difference]: With dead ends: 224 [2020-12-09 11:17:56,984 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 11:17:56,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 11:17:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 11:17:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 11:17:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2020-12-09 11:17:57,023 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2020-12-09 11:17:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:57,024 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2020-12-09 11:17:57,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:17:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2020-12-09 11:17:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 11:17:57,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:57,028 INFO L422 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] [2020-12-09 11:17:57,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:17:57,028 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:57,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1694592830, now seen corresponding path program 1 times [2020-12-09 11:17:57,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:57,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903596812] [2020-12-09 11:17:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:17:57,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903596812] [2020-12-09 11:17:57,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:57,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:17:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996936074] [2020-12-09 11:17:57,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:17:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:17:57,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:57,095 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2020-12-09 11:17:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:57,369 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2020-12-09 11:17:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:17:57,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 11:17:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:57,373 INFO L225 Difference]: With dead ends: 433 [2020-12-09 11:17:57,373 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 11:17:57,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 11:17:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-12-09 11:17:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 11:17:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2020-12-09 11:17:57,393 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2020-12-09 11:17:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:57,393 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2020-12-09 11:17:57,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:17:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2020-12-09 11:17:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 11:17:57,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:57,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-09 11:17:57,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:17:57,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash -143905971, now seen corresponding path program 1 times [2020-12-09 11:17:57,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:57,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490840451] [2020-12-09 11:17:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:17:57,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490840451] [2020-12-09 11:17:57,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:57,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:17:57,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791743897] [2020-12-09 11:17:57,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:17:57,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:57,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:17:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:17:57,480 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2020-12-09 11:17:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:57,860 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2020-12-09 11:17:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:17:57,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 11:17:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:57,863 INFO L225 Difference]: With dead ends: 999 [2020-12-09 11:17:57,864 INFO L226 Difference]: Without dead ends: 713 [2020-12-09 11:17:57,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:17:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-09 11:17:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-12-09 11:17:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 11:17:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1104 transitions. [2020-12-09 11:17:57,893 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1104 transitions. Word has length 83 [2020-12-09 11:17:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:57,893 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1104 transitions. [2020-12-09 11:17:57,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:17:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1104 transitions. [2020-12-09 11:17:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 11:17:57,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:57,897 INFO L422 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] [2020-12-09 11:17:57,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 11:17:57,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:57,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:57,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1140308187, now seen corresponding path program 1 times [2020-12-09 11:17:57,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:57,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386671593] [2020-12-09 11:17:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:17:57,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386671593] [2020-12-09 11:17:57,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:57,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:17:57,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945732101] [2020-12-09 11:17:57,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:17:57,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:17:57,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:57,948 INFO L87 Difference]: Start difference. First operand 713 states and 1104 transitions. Second operand 3 states. [2020-12-09 11:17:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:58,194 INFO L93 Difference]: Finished difference Result 1780 states and 2688 transitions. [2020-12-09 11:17:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:17:58,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 11:17:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:58,199 INFO L225 Difference]: With dead ends: 1780 [2020-12-09 11:17:58,200 INFO L226 Difference]: Without dead ends: 1068 [2020-12-09 11:17:58,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-12-09 11:17:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-12-09 11:17:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 11:17:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1359 transitions. [2020-12-09 11:17:58,224 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1359 transitions. Word has length 86 [2020-12-09 11:17:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:58,225 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1359 transitions. [2020-12-09 11:17:58,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:17:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1359 transitions. [2020-12-09 11:17:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-09 11:17:58,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:58,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-09 11:17:58,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 11:17:58,228 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash -886290153, now seen corresponding path program 1 times [2020-12-09 11:17:58,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:58,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638248069] [2020-12-09 11:17:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 11:17:58,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638248069] [2020-12-09 11:17:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:58,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:17:58,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723792381] [2020-12-09 11:17:58,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:17:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:17:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:58,285 INFO L87 Difference]: Start difference. First operand 926 states and 1359 transitions. Second operand 3 states. [2020-12-09 11:17:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:58,613 INFO L93 Difference]: Finished difference Result 2206 states and 3296 transitions. [2020-12-09 11:17:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:17:58,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-09 11:17:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:58,621 INFO L225 Difference]: With dead ends: 2206 [2020-12-09 11:17:58,621 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 11:17:58,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 11:17:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 11:17:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 11:17:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1536 transitions. [2020-12-09 11:17:58,655 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1536 transitions. Word has length 87 [2020-12-09 11:17:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:58,656 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1536 transitions. [2020-12-09 11:17:58,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:17:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1536 transitions. [2020-12-09 11:17:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-09 11:17:58,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:58,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-09 11:17:58,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 11:17:58,659 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1043324307, now seen corresponding path program 1 times [2020-12-09 11:17:58,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:58,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167933756] [2020-12-09 11:17:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:17:58,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167933756] [2020-12-09 11:17:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:58,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:17:58,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5188684] [2020-12-09 11:17:58,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:17:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:17:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:17:58,721 INFO L87 Difference]: Start difference. First operand 1210 states and 1536 transitions. Second operand 4 states. [2020-12-09 11:17:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:59,117 INFO L93 Difference]: Finished difference Result 2419 states and 3071 transitions. [2020-12-09 11:17:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:17:59,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-09 11:17:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:59,124 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 11:17:59,124 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 11:17:59,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:17:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 11:17:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 11:17:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 11:17:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1483 transitions. [2020-12-09 11:17:59,154 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1483 transitions. Word has length 90 [2020-12-09 11:17:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:59,155 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1483 transitions. [2020-12-09 11:17:59,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:17:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1483 transitions. [2020-12-09 11:17:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 11:17:59,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:59,157 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:17:59,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 11:17:59,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:59,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1202867950, now seen corresponding path program 1 times [2020-12-09 11:17:59,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:59,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719442577] [2020-12-09 11:17:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 11:17:59,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719442577] [2020-12-09 11:17:59,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:17:59,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:17:59,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167688727] [2020-12-09 11:17:59,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:17:59,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:17:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:17:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:59,259 INFO L87 Difference]: Start difference. First operand 1210 states and 1483 transitions. Second operand 3 states. [2020-12-09 11:17:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:17:59,504 INFO L93 Difference]: Finished difference Result 2916 states and 3610 transitions. [2020-12-09 11:17:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:17:59,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 11:17:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:17:59,511 INFO L225 Difference]: With dead ends: 2916 [2020-12-09 11:17:59,511 INFO L226 Difference]: Without dead ends: 1707 [2020-12-09 11:17:59,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:17:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-12-09 11:17:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1281. [2020-12-09 11:17:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-12-09 11:17:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1575 transitions. [2020-12-09 11:17:59,533 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1575 transitions. Word has length 108 [2020-12-09 11:17:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:17:59,534 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1575 transitions. [2020-12-09 11:17:59,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:17:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1575 transitions. [2020-12-09 11:17:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-09 11:17:59,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:17:59,536 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:17:59,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 11:17:59,536 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:17:59,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:17:59,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1080134985, now seen corresponding path program 1 times [2020-12-09 11:17:59,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:17:59,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096970144] [2020-12-09 11:17:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:17:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-09 11:17:59,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096970144] [2020-12-09 11:17:59,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212550774] [2020-12-09 11:17:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:17:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:17:59,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:17:59,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:17:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-09 11:17:59,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:18:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-09 11:18:00,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:18:00,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 11:18:00,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307994206] [2020-12-09 11:18:00,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:18:00,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:18:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:18:00,035 INFO L87 Difference]: Start difference. First operand 1281 states and 1575 transitions. Second operand 3 states. [2020-12-09 11:18:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:00,291 INFO L93 Difference]: Finished difference Result 2845 states and 3541 transitions. [2020-12-09 11:18:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:18:00,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-12-09 11:18:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:00,300 INFO L225 Difference]: With dead ends: 2845 [2020-12-09 11:18:00,300 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 11:18:00,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:18:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 11:18:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1423. [2020-12-09 11:18:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-12-09 11:18:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1747 transitions. [2020-12-09 11:18:00,330 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1747 transitions. Word has length 176 [2020-12-09 11:18:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:00,331 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1747 transitions. [2020-12-09 11:18:00,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:18:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1747 transitions. [2020-12-09 11:18:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-09 11:18:00,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:00,336 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2020-12-09 11:18:00,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 11:18:00,536 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1749870580, now seen corresponding path program 1 times [2020-12-09 11:18:00,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:00,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003019499] [2020-12-09 11:18:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 165 proven. 46 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 11:18:00,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003019499] [2020-12-09 11:18:00,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230046841] [2020-12-09 11:18:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:18:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:00,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:18:00,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:18:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 11:18:00,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:18:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 11:18:01,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:18:01,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 11:18:01,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686214810] [2020-12-09 11:18:01,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:18:01,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:01,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:18:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:18:01,076 INFO L87 Difference]: Start difference. First operand 1423 states and 1747 transitions. Second operand 3 states. [2020-12-09 11:18:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:01,286 INFO L93 Difference]: Finished difference Result 3129 states and 3857 transitions. [2020-12-09 11:18:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:18:01,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-12-09 11:18:01,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:01,292 INFO L225 Difference]: With dead ends: 3129 [2020-12-09 11:18:01,292 INFO L226 Difference]: Without dead ends: 1707 [2020-12-09 11:18:01,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:18:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-12-09 11:18:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1423. [2020-12-09 11:18:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-12-09 11:18:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1747 transitions. [2020-12-09 11:18:01,318 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1747 transitions. Word has length 209 [2020-12-09 11:18:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:01,318 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1747 transitions. [2020-12-09 11:18:01,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:18:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1747 transitions. [2020-12-09 11:18:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-09 11:18:01,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:01,323 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2020-12-09 11:18:01,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:18:01,524 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:01,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1404092090, now seen corresponding path program 1 times [2020-12-09 11:18:01,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:01,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495167210] [2020-12-09 11:18:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 189 proven. 11 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-12-09 11:18:01,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495167210] [2020-12-09 11:18:01,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013630429] [2020-12-09 11:18:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:18:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:01,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 11:18:01,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:18:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-09 11:18:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:18:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-09 11:18:02,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:18:02,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 11:18:02,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909440523] [2020-12-09 11:18:02,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:18:02,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:02,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:18:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:18:02,075 INFO L87 Difference]: Start difference. First operand 1423 states and 1747 transitions. Second operand 4 states. [2020-12-09 11:18:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:02,442 INFO L93 Difference]: Finished difference Result 2701 states and 3290 transitions. [2020-12-09 11:18:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:18:02,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-12-09 11:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:02,443 INFO L225 Difference]: With dead ends: 2701 [2020-12-09 11:18:02,443 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:18:02,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:18:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:18:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:18:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:18:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:18:02,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2020-12-09 11:18:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:02,446 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:18:02,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:18:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:18:02,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:18:02,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 11:18:02,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 11:18:02,895 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 11:18:02,896 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (<= ~a7~0 0)) (.cse5 (not .cse3)) (.cse1 (<= 15 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and (<= 14 ~a8~0) (or (and .cse0 .cse1) (and .cse0 .cse2 .cse3))) (and .cse2 (not .cse4) .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse3) (and (<= ~a16~0 4) .cse3 .cse4) (<= ~a21~0 0) (and .cse5 .cse1) (and .cse1 .cse4)))) [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:18:02,897 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (<= ~a7~0 0)) (.cse5 (not .cse3)) (.cse1 (<= 15 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and (<= 14 ~a8~0) (or (and .cse0 .cse1) (and .cse0 .cse2 .cse3))) (and .cse2 (not .cse4) .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse3) (and (<= ~a16~0 4) .cse3 .cse4) (<= ~a21~0 0) (and .cse5 .cse1) (and .cse1 .cse4)))) [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 447) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 11:18:02,898 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 11:18:02,899 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 11:18:02,899 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 11:18:02,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:18:02 BoogieIcfgContainer [2020-12-09 11:18:02,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:18:02,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:18:02,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:18:02,912 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:18:02,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:17:56" (3/4) ... [2020-12-09 11:18:02,915 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:18:02,930 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 11:18:02,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 11:18:02,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 11:18:02,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 11:18:03,012 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18eaa23f-5c2c-43cc-8f9d-309d8a3a506e/bin/utaipan/witness.graphml [2020-12-09 11:18:03,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:18:03,014 INFO L168 Benchmark]: Toolchain (without parser) took 8785.46 ms. Allocated memory was 75.5 MB in the beginning and 302.0 MB in the end (delta: 226.5 MB). Free memory was 39.8 MB in the beginning and 104.1 MB in the end (delta: -64.2 MB). Peak memory consumption was 162.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,014 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 47.2 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:18:03,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.69 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 39.7 MB in the beginning and 51.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.99 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 45.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,015 INFO L168 Benchmark]: Boogie Preprocessor took 59.00 ms. Allocated memory is still 94.4 MB. Free memory was 45.4 MB in the beginning and 40.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,015 INFO L168 Benchmark]: RCFGBuilder took 1351.74 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 40.8 MB in the beginning and 36.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,015 INFO L168 Benchmark]: TraceAbstraction took 6718.79 ms. Allocated memory was 113.2 MB in the beginning and 302.0 MB in the end (delta: 188.7 MB). Free memory was 35.4 MB in the beginning and 118.7 MB in the end (delta: -83.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,015 INFO L168 Benchmark]: Witness Printer took 100.68 ms. Allocated memory is still 302.0 MB. Free memory was 118.7 MB in the beginning and 104.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:18:03,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 47.2 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.69 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 39.7 MB in the beginning and 51.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.99 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 45.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.00 ms. Allocated memory is still 94.4 MB. Free memory was 45.4 MB in the beginning and 40.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1351.74 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 40.8 MB in the beginning and 36.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6718.79 ms. Allocated memory was 113.2 MB in the beginning and 302.0 MB in the end (delta: 188.7 MB). Free memory was 35.4 MB in the beginning and 118.7 MB in the end (delta: -83.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.1 GB. * Witness Printer took 100.68 ms. Allocated memory is still 302.0 MB. Free memory was 118.7 MB in the beginning and 104.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 447]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && ((a21 == 1 && 15 <= a8) || ((a21 == 1 && a16 <= 5) && a20 == 1))) || ((a16 <= 5 && !(a17 == 1)) && !(a20 == 1))) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || a21 <= 0) || (!(a20 == 1) && 15 <= a8)) || (15 <= a8 && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && ((a21 == 1 && 15 <= a8) || ((a21 == 1 && a16 <= 5) && a20 == 1))) || ((a16 <= 5 && !(a17 == 1)) && !(a20 == 1))) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || a21 <= 0) || (!(a20 == 1) && 15 <= a8)) || (15 <= a8 && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 384 SDtfs, 804 SDslu, 50 SDs, 0 SdLazy, 2428 SolverSat, 622 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1235 GetRequests, 1212 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1423occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 996 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 179 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1132 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1813 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082766 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1340 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 2387/2455 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...