./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.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_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/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 39bcfd9082233c69fe35086fe400d50c1cc05bc1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:01:11,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:01:11,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:01:11,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:01:11,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:01:11,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:01:11,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:01:11,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:01:11,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:01:11,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:01:11,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:01:11,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:01:11,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:01:11,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:01:11,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:01:11,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:01:11,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:01:11,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:01:11,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:01:11,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:01:11,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:01:11,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:01:11,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:01:11,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:01:11,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:01:11,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:01:11,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:01:11,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:01:11,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:01:11,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:01:11,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:01:11,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:01:11,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:01:11,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:01:11,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:01:11,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:01:11,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:01:11,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:01:11,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:01:11,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:01:11,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:01:11,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:01:11,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:01:11,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:01:11,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:01:11,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:01:11,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:01:11,833 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:01:11,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:01:11,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:01:11,833 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:01:11,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:01:11,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:01:11,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:01:11,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:01:11,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:01:11,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:01:11,836 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_66fdd23f-3c50-4425-b18e-df63836a95d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bcfd9082233c69fe35086fe400d50c1cc05bc1 [2020-12-09 10:01:12,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:01:12,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:01:12,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:01:12,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:01:12,027 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:01:12,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2020-12-09 10:01:12,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/data/8a0e42ba8/ee65e560b5e74a26b1f6a160fa7487e3/FLAG902110ef1 [2020-12-09 10:01:12,444 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:01:12,444 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2020-12-09 10:01:12,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/data/8a0e42ba8/ee65e560b5e74a26b1f6a160fa7487e3/FLAG902110ef1 [2020-12-09 10:01:12,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/data/8a0e42ba8/ee65e560b5e74a26b1f6a160fa7487e3 [2020-12-09 10:01:12,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:01:12,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:01:12,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:01:12,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:01:12,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:01:12,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a846a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12, skipping insertion in model container [2020-12-09 10:01:12,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:01:12,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:01:12,588 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_66fdd23f-3c50-4425-b18e-df63836a95d7/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c[490,503] [2020-12-09 10:01:12,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:12,608 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:01:12,616 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_66fdd23f-3c50-4425-b18e-df63836a95d7/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c[490,503] [2020-12-09 10:01:12,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:12,632 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:01:12,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12 WrapperNode [2020-12-09 10:01:12,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:01:12,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:12,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:01:12,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:01:12,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:12,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:01:12,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:01:12,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:01:12,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... [2020-12-09 10:01:12,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:01:12,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:01:12,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:01:12,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:01:12,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/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 10:01:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:01:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:01:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:01:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:01:13,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:01:13,064 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 10:01:13,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:13 BoogieIcfgContainer [2020-12-09 10:01:13,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:01:13,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:01:13,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:01:13,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:01:13,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:01:12" (1/3) ... [2020-12-09 10:01:13,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da2a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:13, skipping insertion in model container [2020-12-09 10:01:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:12" (2/3) ... [2020-12-09 10:01:13,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da2a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:13, skipping insertion in model container [2020-12-09 10:01:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:13" (3/3) ... [2020-12-09 10:01:13,071 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2020-12-09 10:01:13,082 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:01:13,085 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 10:01:13,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 10:01:13,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:01:13,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:01:13,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:01:13,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:01:13,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:01:13,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:01:13,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:01:13,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:01:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 10:01:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 10:01:13,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:13,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 10:01:13,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:13,142 INFO L82 PathProgramCache]: Analyzing trace with hash 169560536, now seen corresponding path program 1 times [2020-12-09 10:01:13,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:13,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391882085] [2020-12-09 10:01:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:13,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:13,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109964649] [2020-12-09 10:01:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/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 10:01:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:13,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 10:01:13,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:13,290 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 10:01:13,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:13,295 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 10:01:13,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391882085] [2020-12-09 10:01:13,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:13,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109964649] [2020-12-09 10:01:13,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:13,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 10:01:13,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659863320] [2020-12-09 10:01:13,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 10:01:13,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 10:01:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:01:13,313 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 10:01:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:13,327 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-12-09 10:01:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:01:13,328 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 10:01:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:13,334 INFO L225 Difference]: With dead ends: 65 [2020-12-09 10:01:13,335 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 10:01:13,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:01:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 10:01:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 10:01:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 10:01:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 10:01:13,360 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-12-09 10:01:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:13,360 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 10:01:13,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 10:01:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 10:01:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 10:01:13,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:13,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 10:01:13,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 10:01:13,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash 890891193, now seen corresponding path program 1 times [2020-12-09 10:01:13,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:13,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351289526] [2020-12-09 10:01:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:13,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:13,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144924647] [2020-12-09 10:01:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/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 10:01:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:13,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:01:13,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:13,770 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 10:01:13,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:13,785 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 10:01:13,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351289526] [2020-12-09 10:01:13,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:13,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144924647] [2020-12-09 10:01:13,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:13,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 10:01:13,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603859194] [2020-12-09 10:01:13,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:01:13,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:13,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:01:13,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:01:13,788 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-12-09 10:01:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:13,813 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-12-09 10:01:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:01:13,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 10:01:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:13,814 INFO L225 Difference]: With dead ends: 51 [2020-12-09 10:01:13,815 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 10:01:13,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:01:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 10:01:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-12-09 10:01:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 10:01:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 10:01:13,822 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2020-12-09 10:01:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:13,822 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 10:01:13,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:01:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 10:01:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:01:13,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:13,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:14,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:14,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1847641631, now seen corresponding path program 1 times [2020-12-09 10:01:14,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744986518] [2020-12-09 10:01:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:14,047 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:14,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485096994] [2020-12-09 10:01:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/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 10:01:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:14,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:01:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:14,191 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 10:01:14,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:14,198 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 10:01:14,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744986518] [2020-12-09 10:01:14,199 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:14,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485096994] [2020-12-09 10:01:14,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:14,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 10:01:14,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349028177] [2020-12-09 10:01:14,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:01:14,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:14,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:01:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:01:14,200 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-12-09 10:01:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:14,222 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-12-09 10:01:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:01:14,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 10:01:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:14,223 INFO L225 Difference]: With dead ends: 61 [2020-12-09 10:01:14,223 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 10:01:14,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 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 10:01:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 10:01:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2020-12-09 10:01:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 10:01:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-09 10:01:14,227 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2020-12-09 10:01:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:14,228 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-09 10:01:14,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:01:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-09 10:01:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:01:14,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:14,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:14,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:14,430 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:14,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1442287066, now seen corresponding path program 1 times [2020-12-09 10:01:14,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:14,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220097275] [2020-12-09 10:01:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:14,438 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:14,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220196820] [2020-12-09 10:01:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 10:01:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:14,541 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 10:01:14,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:14,563 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 10:01:14,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220097275] [2020-12-09 10:01:14,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:14,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220196820] [2020-12-09 10:01:14,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:14,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 10:01:14,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411538328] [2020-12-09 10:01:14,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:01:14,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:01:14,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:01:14,565 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2020-12-09 10:01:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:14,717 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-12-09 10:01:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 10:01:14,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-09 10:01:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:14,718 INFO L225 Difference]: With dead ends: 76 [2020-12-09 10:01:14,718 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 10:01:14,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:01:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 10:01:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 32. [2020-12-09 10:01:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 10:01:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-09 10:01:14,723 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2020-12-09 10:01:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:14,724 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-09 10:01:14,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:01:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-09 10:01:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:01:14,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:14,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:14,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:14,926 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:14,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1236409283, now seen corresponding path program 1 times [2020-12-09 10:01:14,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:14,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138175936] [2020-12-09 10:01:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:14,941 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:14,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619950565] [2020-12-09 10:01:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 10:01:15,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:15,048 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 10:01:15,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:15,067 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 10:01:15,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138175936] [2020-12-09 10:01:15,068 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:15,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619950565] [2020-12-09 10:01:15,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:15,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 10:01:15,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182975522] [2020-12-09 10:01:15,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:01:15,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:01:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:01:15,070 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-12-09 10:01:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:15,143 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-09 10:01:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:01:15,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 10:01:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:15,144 INFO L225 Difference]: With dead ends: 59 [2020-12-09 10:01:15,144 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 10:01:15,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 10:01:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-09 10:01:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 10:01:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-12-09 10:01:15,150 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 10 [2020-12-09 10:01:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:15,150 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-12-09 10:01:15,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:01:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-12-09 10:01:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 10:01:15,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:15,151 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:15,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:15,352 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash 971784697, now seen corresponding path program 1 times [2020-12-09 10:01:15,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:15,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958606219] [2020-12-09 10:01:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:15,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:15,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957376680] [2020-12-09 10:01:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:15,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:01:15,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:15,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:15,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958606219] [2020-12-09 10:01:15,471 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:15,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957376680] [2020-12-09 10:01:15,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:15,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 10:01:15,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671630158] [2020-12-09 10:01:15,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:01:15,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:01:15,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:15,472 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-12-09 10:01:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:15,510 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-12-09 10:01:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:01:15,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 10:01:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:15,512 INFO L225 Difference]: With dead ends: 116 [2020-12-09 10:01:15,512 INFO L226 Difference]: Without dead ends: 88 [2020-12-09 10:01:15,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:01:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-09 10:01:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2020-12-09 10:01:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 10:01:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-12-09 10:01:15,522 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 12 [2020-12-09 10:01:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:15,522 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-12-09 10:01:15,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:01:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-12-09 10:01:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 10:01:15,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:15,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:15,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:15,725 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:15,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:15,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1516777280, now seen corresponding path program 1 times [2020-12-09 10:01:15,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:15,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515850025] [2020-12-09 10:01:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:15,737 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:15,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140727174] [2020-12-09 10:01:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:15,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 10:01:15,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:15,910 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 10:01:15,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:15,932 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 10:01:15,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515850025] [2020-12-09 10:01:15,932 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:15,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140727174] [2020-12-09 10:01:15,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:15,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 10:01:15,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314084810] [2020-12-09 10:01:15,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:01:15,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:01:15,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:01:15,933 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 6 states. [2020-12-09 10:01:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:16,024 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2020-12-09 10:01:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:01:16,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 10:01:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:16,026 INFO L225 Difference]: With dead ends: 75 [2020-12-09 10:01:16,026 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 10:01:16,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 10:01:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-12-09 10:01:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 10:01:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-12-09 10:01:16,037 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 12 [2020-12-09 10:01:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:16,038 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-12-09 10:01:16,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:01:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-12-09 10:01:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:01:16,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:16,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:16,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:16,240 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1629210339, now seen corresponding path program 1 times [2020-12-09 10:01:16,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:01:16,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607129254] [2020-12-09 10:01:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:01:16,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:01:16,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836538824] [2020-12-09 10:01:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 10:01:16,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:18,378 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 10:01:22,453 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 10:01:22,465 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 10:01:22,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:22,489 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 10:01:22,489 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:01:22,527 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 10:01:22,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607129254] [2020-12-09 10:01:22,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:22,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836538824] [2020-12-09 10:01:22,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:22,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 10:01:22,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283494310] [2020-12-09 10:01:22,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:01:22,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:01:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:01:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:22,529 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 8 states. [2020-12-09 10:01:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:22,531 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-12-09 10:01:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:01:22,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 10:01:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:22,532 INFO L225 Difference]: With dead ends: 70 [2020-12-09 10:01:22,532 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:01:22,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:01:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:01:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:01:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:01:22,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-09 10:01:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:22,533 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:01:22,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:01:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:01:22,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:01:22,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 10:01:22,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:01:22,792 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,792 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,792 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 10:01:22,792 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,792 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 10:01:22,793 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,793 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 10:01:22,793 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,793 INFO L258 CegarLoopResult]: At program point L11-11(lines 51 52) the Hoare annotation is: false [2020-12-09 10:01:22,793 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,793 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,793 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:01:22,793 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 10:01:22,794 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L258 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,795 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-12-09 10:01:22,796 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:01:22,796 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 10:01:22,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:01:22 BoogieIcfgContainer [2020-12-09 10:01:22,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:01:22,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:01:22,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:01:22,804 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:01:22,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:13" (3/4) ... [2020-12-09 10:01:22,806 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:01:22,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 10:01:22,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 10:01:22,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 10:01:22,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:01:22,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66fdd23f-3c50-4425-b18e-df63836a95d7/bin/utaipan/witness.graphml [2020-12-09 10:01:22,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:01:22,851 INFO L168 Benchmark]: Toolchain (without parser) took 10386.56 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.8 MB in the beginning and 87.9 MB in the end (delta: -34.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,851 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:22,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.61 ms. Allocated memory is still 94.4 MB. Free memory was 53.7 MB in the beginning and 67.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.77 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 65.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,852 INFO L168 Benchmark]: Boogie Preprocessor took 17.94 ms. Allocated memory is still 94.4 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:22,852 INFO L168 Benchmark]: RCFGBuilder took 386.88 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 50.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,852 INFO L168 Benchmark]: TraceAbstraction took 9736.92 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 39.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,853 INFO L168 Benchmark]: Witness Printer took 46.54 ms. Allocated memory is still 113.2 MB. Free memory was 39.2 MB in the beginning and 87.9 MB in the end (delta: -48.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:22,854 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 94.4 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.61 ms. Allocated memory is still 94.4 MB. Free memory was 53.7 MB in the beginning and 67.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.77 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 65.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.94 ms. Allocated memory is still 94.4 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 386.88 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 50.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9736.92 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 39.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * Witness Printer took 46.54 ms. Allocated memory is still 113.2 MB. Free memory was 39.2 MB in the beginning and 87.9 MB in the end (delta: -48.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 440 SDs, 0 SdLazy, 239 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 107 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 10699 SizeOfPredicates, 44 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 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...