./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI --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 93bb43afb01d6e3a62dc39071b7659c8b1c085d1 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:26,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:26,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:26,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:26,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:26,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:26,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:26,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:26,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:26,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:26,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:26,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:26,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:26,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:26,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:26,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:26,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:26,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:26,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:26,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:26,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:26,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:26,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:26,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:26,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:26,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:26,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:26,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:26,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:26,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:26,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:26,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:26,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:26,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:26,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:26,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:26,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:26,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:26,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:26,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:26,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:26,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:26,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:26,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:26,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:26,886 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:26,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:26,886 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:26,886 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:26,887 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:26,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:26,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:26,894 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:26,895 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:26,895 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:26,895 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:26,895 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:26,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:26,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:26,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:26,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:26,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:26,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:26,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:26,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:26,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:26,898 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:26,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:26,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:26,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:26,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:26,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:26,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:26,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:26,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:26,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:26,902 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:26,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:26,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:26,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:26,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:26,903 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93bb43afb01d6e3a62dc39071b7659c8b1c085d1 [2021-10-11 02:24:27,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:27,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:27,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:27,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:27,173 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:27,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2021-10-11 02:24:27,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/data/af998d14b/216fc5bd06894f2e8814f5f03623996d/FLAGe392654cb [2021-10-11 02:24:27,793 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:27,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2021-10-11 02:24:27,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/data/af998d14b/216fc5bd06894f2e8814f5f03623996d/FLAGe392654cb [2021-10-11 02:24:28,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/data/af998d14b/216fc5bd06894f2e8814f5f03623996d [2021-10-11 02:24:28,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:28,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:28,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:28,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:28,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:28,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eaa41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28, skipping insertion in model container [2021-10-11 02:24:28,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:28,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:28,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2021-10-11 02:24:28,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:28,433 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:28,446 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2021-10-11 02:24:28,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:28,487 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28 WrapperNode [2021-10-11 02:24:28,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:28,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:28,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:28,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:28,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:28,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:28,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:28,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:28,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... [2021-10-11 02:24:28,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:28,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:28,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:28,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:28,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:29,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:29,249 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2021-10-11 02:24:29,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29 BoogieIcfgContainer [2021-10-11 02:24:29,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:29,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:29,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:29,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:29,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:28" (1/3) ... [2021-10-11 02:24:29,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:29, skipping insertion in model container [2021-10-11 02:24:29,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:28" (2/3) ... [2021-10-11 02:24:29,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:29, skipping insertion in model container [2021-10-11 02:24:29,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29" (3/3) ... [2021-10-11 02:24:29,262 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2021-10-11 02:24:29,275 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:29,279 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2021-10-11 02:24:29,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-11 02:24:29,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:29,315 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:29,315 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:29,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:29,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:29,316 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:29,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:29,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-10-11 02:24:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:29,341 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:29,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:29,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1658517419, now seen corresponding path program 1 times [2021-10-11 02:24:29,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:29,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402944258] [2021-10-11 02:24:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:29,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402944258] [2021-10-11 02:24:29,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:29,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:29,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609097777] [2021-10-11 02:24:29,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:29,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:29,566 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2021-10-11 02:24:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:29,694 INFO L93 Difference]: Finished difference Result 168 states and 223 transitions. [2021-10-11 02:24:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:29,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:24:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:29,705 INFO L225 Difference]: With dead ends: 168 [2021-10-11 02:24:29,705 INFO L226 Difference]: Without dead ends: 83 [2021-10-11 02:24:29,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-11 02:24:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-11 02:24:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-10-11 02:24:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2021-10-11 02:24:29,750 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 10 [2021-10-11 02:24:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:29,750 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2021-10-11 02:24:29,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2021-10-11 02:24:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:29,752 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:29,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:29,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:29,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash -402216392, now seen corresponding path program 1 times [2021-10-11 02:24:29,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:29,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395800358] [2021-10-11 02:24:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:29,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395800358] [2021-10-11 02:24:29,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:29,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:29,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809998259] [2021-10-11 02:24:29,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:29,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:29,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:29,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:29,840 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 5 states. [2021-10-11 02:24:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:30,056 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2021-10-11 02:24:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:30,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:24:30,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:30,058 INFO L225 Difference]: With dead ends: 83 [2021-10-11 02:24:30,059 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:24:30,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:24:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-11 02:24:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-10-11 02:24:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-10-11 02:24:30,073 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 12 [2021-10-11 02:24:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:30,073 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-10-11 02:24:30,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-10-11 02:24:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:24:30,075 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:30,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:30,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:30,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 535082762, now seen corresponding path program 1 times [2021-10-11 02:24:30,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:30,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507698782] [2021-10-11 02:24:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:30,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507698782] [2021-10-11 02:24:30,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:30,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:30,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851613488] [2021-10-11 02:24:30,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:30,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:30,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:30,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:30,147 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 4 states. [2021-10-11 02:24:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:30,341 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2021-10-11 02:24:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:30,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:24:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:30,347 INFO L225 Difference]: With dead ends: 88 [2021-10-11 02:24:30,348 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 02:24:30,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 02:24:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2021-10-11 02:24:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:24:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-11 02:24:30,380 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 15 [2021-10-11 02:24:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:30,380 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-11 02:24:30,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-11 02:24:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:24:30,382 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:30,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:30,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:30,384 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -330656293, now seen corresponding path program 1 times [2021-10-11 02:24:30,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299915654] [2021-10-11 02:24:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:24:30,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299915654] [2021-10-11 02:24:30,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60073216] [2021-10-11 02:24:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:30,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:24:30,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:30,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:30,868 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:24:30,868 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:24:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:30,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1832180830] [2021-10-11 02:24:31,004 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-10-11 02:24:31,004 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:31,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:31,015 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:31,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:31,725 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:24:31,937 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2021-10-11 02:24:32,087 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:24:32,254 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-10-11 02:24:32,420 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-10-11 02:24:32,596 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-10-11 02:24:32,783 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-10-11 02:24:32,973 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-10-11 02:24:33,174 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2021-10-11 02:24:33,436 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-10-11 02:24:33,876 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:24:34,442 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-10-11 02:24:34,796 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2021-10-11 02:24:35,187 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-10-11 02:24:35,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:24:35,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:35,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 14 [2021-10-11 02:24:35,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288352654] [2021-10-11 02:24:35,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 02:24:35,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 02:24:35,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:24:35,368 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 14 states. [2021-10-11 02:24:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:35,714 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2021-10-11 02:24:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:24:35,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2021-10-11 02:24:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:35,716 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:24:35,716 INFO L226 Difference]: Without dead ends: 68 [2021-10-11 02:24:35,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2021-10-11 02:24:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-11 02:24:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2021-10-11 02:24:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:24:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-10-11 02:24:35,725 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 26 [2021-10-11 02:24:35,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:35,725 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-10-11 02:24:35,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 02:24:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-10-11 02:24:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:24:35,727 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:35,727 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] [2021-10-11 02:24:35,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:24:35,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1619167883, now seen corresponding path program 1 times [2021-10-11 02:24:35,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:35,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141903644] [2021-10-11 02:24:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:35,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141903644] [2021-10-11 02:24:35,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:35,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:35,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694302927] [2021-10-11 02:24:35,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:35,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:35,991 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2021-10-11 02:24:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:36,036 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-10-11 02:24:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:36,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-10-11 02:24:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:36,039 INFO L225 Difference]: With dead ends: 84 [2021-10-11 02:24:36,042 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:24:36,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:24:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-11 02:24:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:24:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2021-10-11 02:24:36,052 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 38 [2021-10-11 02:24:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:36,052 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2021-10-11 02:24:36,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2021-10-11 02:24:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 02:24:36,053 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:36,053 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] [2021-10-11 02:24:36,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-11 02:24:36,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:36,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1232227253, now seen corresponding path program 1 times [2021-10-11 02:24:36,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:36,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789213935] [2021-10-11 02:24:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789213935] [2021-10-11 02:24:36,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:36,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:36,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374606507] [2021-10-11 02:24:36,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:36,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:36,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:36,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:36,110 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 4 states. [2021-10-11 02:24:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:36,191 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-10-11 02:24:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:36,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-10-11 02:24:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:36,192 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:24:36,193 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:24:36,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:24:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-10-11 02:24:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:24:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-11 02:24:36,199 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 39 [2021-10-11 02:24:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:36,200 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-11 02:24:36,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-10-11 02:24:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-11 02:24:36,202 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:36,202 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] [2021-10-11 02:24:36,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-11 02:24:36,202 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:36,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:36,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1240746286, now seen corresponding path program 1 times [2021-10-11 02:24:36,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:36,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563919849] [2021-10-11 02:24:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:36,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563919849] [2021-10-11 02:24:36,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:36,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:36,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247702210] [2021-10-11 02:24:36,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:36,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:36,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:36,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:36,265 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2021-10-11 02:24:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:36,354 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-10-11 02:24:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:36,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-10-11 02:24:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:36,356 INFO L225 Difference]: With dead ends: 58 [2021-10-11 02:24:36,356 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:36,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:36,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-11 02:24:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:36,358 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:36,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:36,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:36,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-11 02:24:36,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:37,061 INFO L258 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2021-10-11 02:24:37,061 INFO L262 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,061 INFO L258 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,061 INFO L262 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L258 CegarLoopResult]: At program point L18-23(line 55) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L258 CegarLoopResult]: At program point L18-26(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L258 CegarLoopResult]: At program point L18-29(line 58) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,062 INFO L258 CegarLoopResult]: At program point L18-32(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= ULTIMATE.start_main_~c~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2021-10-11 02:24:37,062 INFO L262 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L258 CegarLoopResult]: At program point L18-38(lines 17 22) the Hoare annotation is: (let ((.cse6 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse6 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse6 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse5 (<= (+ ULTIMATE.start_main_~c~0 2) ULTIMATE.start_main_~tokenlen~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) .cse5)))) [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,063 INFO L262 CegarLoopResult]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,064 INFO L262 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,064 INFO L262 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,064 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,064 INFO L258 CegarLoopResult]: At program point L18-41(lines 17 22) the Hoare annotation is: (let ((.cse6 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse6 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse6 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse5 (<= (+ ULTIMATE.start_main_~c~0 2) ULTIMATE.start_main_~tokenlen~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) .cse5)))) [2021-10-11 02:24:37,064 INFO L262 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,064 INFO L262 CegarLoopResult]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L258 CegarLoopResult]: At program point L18-44(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,065 INFO L262 CegarLoopResult]: For program point L36(lines 25 83) no Hoare annotation was computed. [2021-10-11 02:24:37,066 INFO L262 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,066 INFO L258 CegarLoopResult]: At program point L69-1(lines 69 75) the Hoare annotation is: (let ((.cse5 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse5 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse5 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~c~0 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0))))) [2021-10-11 02:24:37,066 INFO L258 CegarLoopResult]: At program point L18-47(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2021-10-11 02:24:37,066 INFO L262 CegarLoopResult]: For program point L19-16(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,066 INFO L262 CegarLoopResult]: For program point L18-48(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,067 INFO L262 CegarLoopResult]: For program point L19-17(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,067 INFO L258 CegarLoopResult]: At program point L18-50(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2021-10-11 02:24:37,067 INFO L262 CegarLoopResult]: For program point L18-51(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,067 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:37,067 INFO L262 CegarLoopResult]: For program point L37(lines 25 83) no Hoare annotation was computed. [2021-10-11 02:24:37,067 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point L44(lines 44 80) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point L61(lines 61 79) no Hoare annotation was computed. [2021-10-11 02:24:37,069 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,070 INFO L258 CegarLoopResult]: At program point L47-1(lines 17 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,070 INFO L262 CegarLoopResult]: For program point L47-2(lines 47 52) no Hoare annotation was computed. [2021-10-11 02:24:37,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,070 INFO L265 CegarLoopResult]: At program point L81(lines 25 83) the Hoare annotation is: true [2021-10-11 02:24:37,070 INFO L262 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2021-10-11 02:24:37,071 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,071 INFO L262 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-11 02:24:37,071 INFO L258 CegarLoopResult]: At program point L65-1(lines 17 77) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse3 (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0))) (or (and .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3))) [2021-10-11 02:24:37,071 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,071 INFO L265 CegarLoopResult]: At program point L82(lines 24 83) the Hoare annotation is: true [2021-10-11 02:24:37,071 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-11 02:24:37,072 INFO L262 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2021-10-11 02:24:37,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:37,072 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,072 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,072 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,072 INFO L258 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,073 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,073 INFO L258 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2021-10-11 02:24:37,073 INFO L262 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,073 INFO L262 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,073 INFO L258 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2021-10-11 02:24:37,073 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-11 02:24:37,074 INFO L262 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:24:37,074 INFO L262 CegarLoopResult]: For program point L35-1(lines 25 83) no Hoare annotation was computed. [2021-10-11 02:24:37,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:37 BoogieIcfgContainer [2021-10-11 02:24:37,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:37,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:37,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:37,099 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:37,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29" (3/4) ... [2021-10-11 02:24:37,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:37,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-10-11 02:24:37,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:37,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:37,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:37,189 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadd00a1-8c5b-4ba6-bb60-359c6a3c7a5d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:37,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:37,191 INFO L168 Benchmark]: Toolchain (without parser) took 8969.63 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 77.8 MB in the beginning and 71.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,191 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 45.5 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:37,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.44 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.82 ms. Allocated memory is still 104.9 MB. Free memory was 67.1 MB in the beginning and 65.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,192 INFO L168 Benchmark]: Boogie Preprocessor took 33.68 ms. Allocated memory is still 104.9 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:37,193 INFO L168 Benchmark]: RCFGBuilder took 674.80 ms. Allocated memory is still 104.9 MB. Free memory was 63.5 MB in the beginning and 73.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,193 INFO L168 Benchmark]: TraceAbstraction took 7843.67 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 72.5 MB in the beginning and 77.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,194 INFO L168 Benchmark]: Witness Printer took 90.81 ms. Allocated memory is still 161.5 MB. Free memory was 77.0 MB in the beginning and 71.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:37,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 45.5 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.44 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.82 ms. Allocated memory is still 104.9 MB. Free memory was 67.1 MB in the beginning and 65.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.68 ms. Allocated memory is still 104.9 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 674.80 ms. Allocated memory is still 104.9 MB. Free memory was 63.5 MB in the beginning and 73.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7843.67 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 72.5 MB in the beginning and 77.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. * Witness Printer took 90.81 ms. Allocated memory is still 161.5 MB. Free memory was 77.0 MB in the beginning and 71.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 18 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && !(0 == cond)) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && c + 2 <= tokenlen) || ((((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) && c + 2 <= tokenlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && 1 == cond) && 0 <= scheme) && 1 <= c) && cp < urilen) || ((((1 <= cp && 1 == cond) && c == 0) && 0 <= scheme) && cp < urilen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && c + 2 <= tokenlen) || ((((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) && c + 2 <= tokenlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && !(0 == cond)) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && !(0 == cond)) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: (((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && c == 0) && 0 <= scheme) || (((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 367 SDtfs, 318 SDslu, 319 SDs, 0 SdLazy, 347 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, 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, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 48 NumberOfFragments, 463 HoareAnnotationTreeSize, 20 FomulaSimplifications, 287 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 697 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 18920 SizeOfPredicates, 8 NumberOfNonLiveVariables, 96 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 2/9 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...