./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/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_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/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_e585f781-ee89-4e63-8289-19d3527c7372/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 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:28:51,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:51,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:51,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:51,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:51,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:51,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:51,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:51,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:51,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:51,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:51,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:51,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:51,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:51,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:51,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:51,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:51,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:51,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:51,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:51,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:51,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:51,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:51,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:51,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:51,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:51,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:51,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:51,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:51,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:51,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:51,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:51,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:51,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:51,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:51,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:51,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:51,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:51,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:51,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:51,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:51,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:51,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:51,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:51,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:51,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:51,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:51,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:51,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:51,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:51,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:51,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:51,116 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:51,116 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:51,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:51,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:51,117 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:51,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:51,118 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:51,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:51,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:51,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:51,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:51,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:51,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:51,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:51,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:51,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:51,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:51,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:51,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:51,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:51,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:51,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:51,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:51,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:51,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:51,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:51,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:51,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:51,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:51,123 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_e585f781-ee89-4e63-8289-19d3527c7372/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 [2021-10-11 02:28:51,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:51,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:51,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:51,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:51,386 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:51,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2021-10-11 02:28:51,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/data/73564bf4c/3e54309d96b9475c827c2a92de927a13/FLAG677c145f3 [2021-10-11 02:28:52,085 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:52,086 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2021-10-11 02:28:52,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/data/73564bf4c/3e54309d96b9475c827c2a92de927a13/FLAG677c145f3 [2021-10-11 02:28:52,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/data/73564bf4c/3e54309d96b9475c827c2a92de927a13 [2021-10-11 02:28:52,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:52,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:52,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:52,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:52,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:52,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:52" (1/1) ... [2021-10-11 02:28:52,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cbb641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:52, skipping insertion in model container [2021-10-11 02:28:52,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:52" (1/1) ... [2021-10-11 02:28:52,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:52,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:52,879 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_e585f781-ee89-4e63-8289-19d3527c7372/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2021-10-11 02:28:52,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:52,905 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:53,002 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_e585f781-ee89-4e63-8289-19d3527c7372/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2021-10-11 02:28:53,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:53,032 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:53,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53 WrapperNode [2021-10-11 02:28:53,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:53,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:53,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:53,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:53,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:53,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:53,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:53,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:53,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:53,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:53,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:53,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:53,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/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 02:28:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:55,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:55,620 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:55,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:55 BoogieIcfgContainer [2021-10-11 02:28:55,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:55,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:55,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:55,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:55,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:52" (1/3) ... [2021-10-11 02:28:55,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62143fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:55, skipping insertion in model container [2021-10-11 02:28:55,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (2/3) ... [2021-10-11 02:28:55,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62143fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:55, skipping insertion in model container [2021-10-11 02:28:55,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:55" (3/3) ... [2021-10-11 02:28:55,636 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label03.c [2021-10-11 02:28:55,652 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:55,662 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:55,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:55,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:55,706 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:55,706 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:55,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:55,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:55,707 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:55,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:55,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:28:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:28:55,740 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:55,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:55,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:55,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1806904664, now seen corresponding path program 1 times [2021-10-11 02:28:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:55,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128735587] [2021-10-11 02:28:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:56,299 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 02:28:56,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128735587] [2021-10-11 02:28:56,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:56,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:56,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954117839] [2021-10-11 02:28:56,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:56,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:56,323 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:28:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:57,157 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:28:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:57,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:28:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:57,190 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:28:57,191 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:28:57,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:28:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:28:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:28:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:28:57,276 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:28:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:57,277 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:28:57,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:28:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:28:57,288 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:57,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:57,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:57,289 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1703769799, now seen corresponding path program 1 times [2021-10-11 02:28:57,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938071310] [2021-10-11 02:28:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:57,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938071310] [2021-10-11 02:28:57,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:57,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:57,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463609867] [2021-10-11 02:28:57,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:57,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:57,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:57,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:57,567 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:28:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:58,265 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:28:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:58,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:28:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:58,268 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:28:58,269 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:28:58,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:28:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:28:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:28:58,286 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:28:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:58,294 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:28:58,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:28:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:28:58,296 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:58,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:58,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:58,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash 350106743, now seen corresponding path program 1 times [2021-10-11 02:28:58,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:58,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324796684] [2021-10-11 02:28:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:58,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324796684] [2021-10-11 02:28:58,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:58,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:58,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866180939] [2021-10-11 02:28:58,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:58,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:58,436 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:28:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:58,960 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:28:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:58,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:28:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:58,963 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:28:58,963 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:28:58,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:28:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:28:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:28:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2021-10-11 02:28:58,984 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2021-10-11 02:28:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:58,985 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2021-10-11 02:28:58,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2021-10-11 02:28:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:28:58,987 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:58,988 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:58,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:58,988 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:58,989 INFO L82 PathProgramCache]: Analyzing trace with hash -785759947, now seen corresponding path program 1 times [2021-10-11 02:28:58,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:58,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118704457] [2021-10-11 02:28:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:28:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118704457] [2021-10-11 02:28:59,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:59,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566579633] [2021-10-11 02:28:59,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:59,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:59,060 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2021-10-11 02:28:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,496 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2021-10-11 02:28:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:59,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:28:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,500 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:28:59,501 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:28:59,502 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 02:28:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:28:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:28:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:28:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2021-10-11 02:28:59,528 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 111 [2021-10-11 02:28:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,528 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2021-10-11 02:28:59,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2021-10-11 02:28:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-11 02:28:59,531 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,532 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:59,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1795765412, now seen corresponding path program 1 times [2021-10-11 02:28:59,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691741697] [2021-10-11 02:28:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:28:59,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691741697] [2021-10-11 02:28:59,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:59,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836426147] [2021-10-11 02:28:59,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,701 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand 4 states. [2021-10-11 02:29:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,222 INFO L93 Difference]: Finished difference Result 1283 states and 1754 transitions. [2021-10-11 02:29:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:00,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2021-10-11 02:29:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,231 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:29:00,231 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:29:00,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:29:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:29:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:29:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 858 transitions. [2021-10-11 02:29:00,254 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 858 transitions. Word has length 117 [2021-10-11 02:29:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,254 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 858 transitions. [2021-10-11 02:29:00,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 858 transitions. [2021-10-11 02:29:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-11 02:29:00,257 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,257 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:00,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:00,258 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1365893287, now seen corresponding path program 1 times [2021-10-11 02:29:00,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365936067] [2021-10-11 02:29:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:29:00,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365936067] [2021-10-11 02:29:00,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:00,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:00,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085416641] [2021-10-11 02:29:00,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:00,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:00,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:00,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:00,376 INFO L87 Difference]: Start difference. First operand 642 states and 858 transitions. Second operand 4 states. [2021-10-11 02:29:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,976 INFO L93 Difference]: Finished difference Result 1496 states and 1977 transitions. [2021-10-11 02:29:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:00,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2021-10-11 02:29:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,982 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:29:00,982 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:29:00,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:29:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:29:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:29:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1022 transitions. [2021-10-11 02:29:01,005 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1022 transitions. Word has length 131 [2021-10-11 02:29:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:01,005 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1022 transitions. [2021-10-11 02:29:01,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1022 transitions. [2021-10-11 02:29:01,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:29:01,008 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:01,009 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 02:29:01,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:01,009 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1083758206, now seen corresponding path program 1 times [2021-10-11 02:29:01,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:01,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113244547] [2021-10-11 02:29:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:29:01,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113244547] [2021-10-11 02:29:01,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:01,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:01,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450287994] [2021-10-11 02:29:01,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:01,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:01,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:01,190 INFO L87 Difference]: Start difference. First operand 784 states and 1022 transitions. Second operand 3 states. [2021-10-11 02:29:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:01,548 INFO L93 Difference]: Finished difference Result 1709 states and 2196 transitions. [2021-10-11 02:29:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:01,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:29:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:01,554 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:29:01,554 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:29:01,555 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 02:29:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:29:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:29:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:29:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1016 transitions. [2021-10-11 02:29:01,575 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1016 transitions. Word has length 148 [2021-10-11 02:29:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:01,576 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1016 transitions. [2021-10-11 02:29:01,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1016 transitions. [2021-10-11 02:29:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-11 02:29:01,579 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:01,579 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:01,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:01,580 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash -274853084, now seen corresponding path program 1 times [2021-10-11 02:29:01,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:01,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257846972] [2021-10-11 02:29:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-11 02:29:01,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257846972] [2021-10-11 02:29:01,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:01,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:29:01,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788484771] [2021-10-11 02:29:01,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:01,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:01,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:01,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:01,741 INFO L87 Difference]: Start difference. First operand 784 states and 1016 transitions. Second operand 5 states. [2021-10-11 02:29:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:02,229 INFO L93 Difference]: Finished difference Result 1733 states and 2208 transitions. [2021-10-11 02:29:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:02,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2021-10-11 02:29:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:02,241 INFO L225 Difference]: With dead ends: 1733 [2021-10-11 02:29:02,241 INFO L226 Difference]: Without dead ends: 950 [2021-10-11 02:29:02,242 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 02:29:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-10-11 02:29:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2021-10-11 02:29:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:29:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2021-10-11 02:29:02,264 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 191 [2021-10-11 02:29:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:02,265 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2021-10-11 02:29:02,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2021-10-11 02:29:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-11 02:29:02,269 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:02,269 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:02,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:29:02,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:02,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1630204963, now seen corresponding path program 1 times [2021-10-11 02:29:02,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:02,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726613487] [2021-10-11 02:29:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:29:02,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726613487] [2021-10-11 02:29:02,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:02,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:02,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571956603] [2021-10-11 02:29:02,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:02,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:02,412 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2021-10-11 02:29:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:02,770 INFO L93 Difference]: Finished difference Result 1851 states and 2332 transitions. [2021-10-11 02:29:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:02,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2021-10-11 02:29:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:02,776 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:29:02,777 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:29:02,778 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 02:29:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:29:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:29:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:29:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:29:02,808 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 204 [2021-10-11 02:29:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:02,808 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:29:02,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:29:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-10-11 02:29:02,815 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:02,815 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:02,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:29:02,815 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:02,816 INFO L82 PathProgramCache]: Analyzing trace with hash 236751181, now seen corresponding path program 1 times [2021-10-11 02:29:02,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:02,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565490101] [2021-10-11 02:29:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-11 02:29:03,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565490101] [2021-10-11 02:29:03,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10814384] [2021-10-11 02:29:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/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 02:29:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:03,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:03,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:29:03,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:29:04,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:04,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:29:04,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779976025] [2021-10-11 02:29:04,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:04,104 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:29:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:04,491 INFO L93 Difference]: Finished difference Result 2277 states and 2817 transitions. [2021-10-11 02:29:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:04,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2021-10-11 02:29:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:04,499 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:29:04,499 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:04,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2021-10-11 02:29:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:29:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2021-10-11 02:29:04,533 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 216 [2021-10-11 02:29:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:04,534 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2021-10-11 02:29:04,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2021-10-11 02:29:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-10-11 02:29:04,538 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:04,538 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:04,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:29:04,767 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:04,767 INFO L82 PathProgramCache]: Analyzing trace with hash 228350323, now seen corresponding path program 1 times [2021-10-11 02:29:04,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:04,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613937833] [2021-10-11 02:29:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 62 proven. 221 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:29:05,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613937833] [2021-10-11 02:29:05,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486949154] [2021-10-11 02:29:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:05,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-11 02:29:05,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-11 02:29:05,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:05,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:29:05,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192579911] [2021-10-11 02:29:05,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:05,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:05,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:05,861 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2021-10-11 02:29:06,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:06,257 INFO L93 Difference]: Finished difference Result 2133 states and 2642 transitions. [2021-10-11 02:29:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:06,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2021-10-11 02:29:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:06,259 INFO L225 Difference]: With dead ends: 2133 [2021-10-11 02:29:06,259 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:06,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:06,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2021-10-11 02:29:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:06,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:06,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:06,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:06,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:06,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:06,702 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-10-11 02:29:06,827 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-10-11 02:29:06,830 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:29:06,832 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:29:06,832 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:29:06,832 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:29:06,832 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:29:06,833 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:29:06,833 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:29:06,837 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:29:06,837 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:29:06,837 INFO L262 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:06,837 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:29:06,837 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:29:06,838 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:29:06,838 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:29:06,838 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:29:06,838 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:29:06,838 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2021-10-11 02:29:06,839 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:29:06,844 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:29:06,844 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:29:06,846 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:29:06,846 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:29:06,846 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:29:06,847 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:29:06,848 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:29:06,848 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:29:06,848 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:29:06,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:06,849 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:29:06,850 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:29:06,850 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:29:06,851 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2021-10-11 02:29:06,851 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:29:06,851 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:29:06,851 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:29:06,851 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:29:06,851 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:29:06,852 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:29:06,852 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:29:06,852 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:06,852 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:29:06,852 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:29:06,852 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:29:06,853 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:29:06,853 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:29:06,853 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:29:06,854 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:29:06,855 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:29:06,856 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2021-10-11 02:29:06,856 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:29:06,857 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 573) no Hoare annotation was computed. [2021-10-11 02:29:06,857 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:29:06,858 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:29:06,858 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:29:06,858 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:29:06,858 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:29:06,858 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:29:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:06 BoogieIcfgContainer [2021-10-11 02:29:06,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:06,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:06,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:06,903 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:06,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:55" (3/4) ... [2021-10-11 02:29:06,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:06,946 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:29:06,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-11 02:29:06,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:29:06,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:29:07,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585f781-ee89-4e63-8289-19d3527c7372/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:07,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:07,106 INFO L168 Benchmark]: Toolchain (without parser) took 14713.01 ms. Allocated memory was 113.2 MB in the beginning and 457.2 MB in the end (delta: 343.9 MB). Free memory was 80.5 MB in the beginning and 232.9 MB in the end (delta: -152.4 MB). Peak memory consumption was 190.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,106 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory was 69.4 MB in the beginning and 69.3 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:07,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.5 MB in the beginning and 71.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.06 ms. Allocated memory is still 113.2 MB. Free memory was 71.1 MB in the beginning and 65.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,107 INFO L168 Benchmark]: Boogie Preprocessor took 83.67 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 61.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,108 INFO L168 Benchmark]: RCFGBuilder took 2412.90 ms. Allocated memory was 113.2 MB in the beginning and 209.7 MB in the end (delta: 96.5 MB). Free memory was 61.1 MB in the beginning and 165.5 MB in the end (delta: -104.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,108 INFO L168 Benchmark]: TraceAbstraction took 11275.52 ms. Allocated memory was 209.7 MB in the beginning and 457.2 MB in the end (delta: 247.5 MB). Free memory was 164.5 MB in the beginning and 247.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 164.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,108 INFO L168 Benchmark]: Witness Printer took 202.49 ms. Allocated memory is still 457.2 MB. Free memory was 247.6 MB in the beginning and 232.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:07,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory was 69.4 MB in the beginning and 69.3 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.5 MB in the beginning and 71.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.06 ms. Allocated memory is still 113.2 MB. Free memory was 71.1 MB in the beginning and 65.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.67 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 61.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2412.90 ms. Allocated memory was 113.2 MB in the beginning and 209.7 MB in the end (delta: 96.5 MB). Free memory was 61.1 MB in the beginning and 165.5 MB in the end (delta: -104.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11275.52 ms. Allocated memory was 209.7 MB in the beginning and 457.2 MB in the end (delta: 247.5 MB). Free memory was 164.5 MB in the beginning and 247.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 164.4 MB. Max. memory is 16.1 GB. * Witness Printer took 202.49 ms. Allocated memory is still 457.2 MB. Free memory was 247.6 MB in the beginning and 232.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 573]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1035 SDslu, 70 SDs, 0 SdLazy, 2958 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 886 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 734 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6746 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1743837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 990 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2421/2728 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...