./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.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_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/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_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/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_a693c3af-fddf-489d-bdfc-72df66859ff6/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 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:25:46,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:46,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:46,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:46,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:46,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:46,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:46,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:46,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:46,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:46,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:46,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:46,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:46,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:46,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:46,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:46,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:46,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:46,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:46,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:46,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:46,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:46,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:46,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:46,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:46,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:46,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:46,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:46,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:46,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:46,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:46,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:46,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:46,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:46,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:46,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:46,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:46,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:46,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:46,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:46,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:46,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:46,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:46,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:46,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:46,173 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:46,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:46,173 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:46,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:46,174 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:46,174 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:46,174 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:46,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:46,175 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:46,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:46,175 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:46,176 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:46,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:46,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:46,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:46,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:46,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:46,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:46,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:46,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:46,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:46,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:46,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:46,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:46,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:46,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:46,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:46,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:46,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:46,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:46,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:46,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:46,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:46,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:46,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:46,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:46,182 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_a693c3af-fddf-489d-bdfc-72df66859ff6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f [2021-10-11 02:25:46,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:46,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:46,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:46,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:46,473 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:46,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2021-10-11 02:25:46,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/data/c41cd2ba7/d26790ee66594703935478b5c5ef191b/FLAG4b6b50dd9 [2021-10-11 02:25:47,106 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:47,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2021-10-11 02:25:47,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/data/c41cd2ba7/d26790ee66594703935478b5c5ef191b/FLAG4b6b50dd9 [2021-10-11 02:25:47,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/data/c41cd2ba7/d26790ee66594703935478b5c5ef191b [2021-10-11 02:25:47,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:47,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:47,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:47,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:47,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:47,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:47,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76149edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47, skipping insertion in model container [2021-10-11 02:25:47,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:47,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:47,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:47,784 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_a693c3af-fddf-489d-bdfc-72df66859ff6/sv-benchmarks/c/eca-rers2012/Problem01_label26.c[18357,18370] [2021-10-11 02:25:47,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:47,833 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:47,953 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_a693c3af-fddf-489d-bdfc-72df66859ff6/sv-benchmarks/c/eca-rers2012/Problem01_label26.c[18357,18370] [2021-10-11 02:25:47,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:47,995 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:47,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47 WrapperNode [2021-10-11 02:25:47,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:47,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:47,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:47,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:48,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:48,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:48,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:48,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:48,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... [2021-10-11 02:25:48,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:48,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:48,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:48,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:48,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/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 02:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:50,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:50,475 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:50,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:50 BoogieIcfgContainer [2021-10-11 02:25:50,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:50,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:50,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:50,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:50,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:47" (1/3) ... [2021-10-11 02:25:50,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e8158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:50, skipping insertion in model container [2021-10-11 02:25:50,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:47" (2/3) ... [2021-10-11 02:25:50,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e8158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:50, skipping insertion in model container [2021-10-11 02:25:50,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:50" (3/3) ... [2021-10-11 02:25:50,489 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2021-10-11 02:25:50,505 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:50,509 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:50,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:50,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:50,556 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:50,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:50,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:50,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:50,557 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:50,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:50,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:25:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:25:50,585 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:50,586 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 02:25:50,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1806911320, now seen corresponding path program 1 times [2021-10-11 02:25:50,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:50,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061296965] [2021-10-11 02:25:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:51,013 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 02:25:51,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061296965] [2021-10-11 02:25:51,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:51,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:51,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930024390] [2021-10-11 02:25:51,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:51,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:51,038 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:25:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:51,563 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:25:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:51,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:25:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:51,577 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:25:51,577 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:25:51,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:25:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:25:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:25:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-11 02:25:51,629 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-11 02:25:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:51,630 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-11 02:25:51,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-11 02:25:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:25:51,634 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:51,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:51,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:51,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1034855813, now seen corresponding path program 1 times [2021-10-11 02:25:51,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:51,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712720660] [2021-10-11 02:25:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:51,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712720660] [2021-10-11 02:25:51,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:51,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:51,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948062452] [2021-10-11 02:25:51,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:51,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:51,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:51,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:51,700 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2021-10-11 02:25:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:52,153 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-11 02:25:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:52,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:25:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:52,158 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:25:52,158 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:25:52,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:25:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:25:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:25:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-11 02:25:52,184 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-11 02:25:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:52,184 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-11 02:25:52,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-11 02:25:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:25:52,188 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:52,188 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 02:25:52,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:52,189 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1703776455, now seen corresponding path program 1 times [2021-10-11 02:25:52,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:52,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440370704] [2021-10-11 02:25:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:52,496 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 02:25:52,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440370704] [2021-10-11 02:25:52,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:52,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:52,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463782064] [2021-10-11 02:25:52,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:52,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:52,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:52,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:52,499 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 4 states. [2021-10-11 02:25:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:53,085 INFO L93 Difference]: Finished difference Result 784 states and 1303 transitions. [2021-10-11 02:25:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:53,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:25:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:53,089 INFO L225 Difference]: With dead ends: 784 [2021-10-11 02:25:53,089 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:25:53,091 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 02:25:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:25:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-11 02:25:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:25:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 512 transitions. [2021-10-11 02:25:53,116 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 512 transitions. Word has length 78 [2021-10-11 02:25:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:53,117 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 512 transitions. [2021-10-11 02:25:53,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 512 transitions. [2021-10-11 02:25:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-11 02:25:53,121 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:53,121 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 02:25:53,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:53,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:53,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1572562034, now seen corresponding path program 1 times [2021-10-11 02:25:53,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:53,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818316664] [2021-10-11 02:25:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:25:53,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818316664] [2021-10-11 02:25:53,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:53,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:53,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348019291] [2021-10-11 02:25:53,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:53,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:53,187 INFO L87 Difference]: Start difference. First operand 358 states and 512 transitions. Second operand 3 states. [2021-10-11 02:25:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:53,576 INFO L93 Difference]: Finished difference Result 857 states and 1253 transitions. [2021-10-11 02:25:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:53,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2021-10-11 02:25:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:53,578 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:25:53,579 INFO L226 Difference]: Without dead ends: 500 [2021-10-11 02:25:53,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-11 02:25:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-10-11 02:25:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:25:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 595 transitions. [2021-10-11 02:25:53,603 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 595 transitions. Word has length 88 [2021-10-11 02:25:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:53,603 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 595 transitions. [2021-10-11 02:25:53,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 595 transitions. [2021-10-11 02:25:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-11 02:25:53,608 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:53,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:25:53,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:53,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash -169372714, now seen corresponding path program 1 times [2021-10-11 02:25:53,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:53,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405573346] [2021-10-11 02:25:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:25:53,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405573346] [2021-10-11 02:25:53,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:53,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:53,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146289926] [2021-10-11 02:25:53,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:53,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:53,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:53,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:53,662 INFO L87 Difference]: Start difference. First operand 429 states and 595 transitions. Second operand 3 states. [2021-10-11 02:25:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:54,008 INFO L93 Difference]: Finished difference Result 1141 states and 1560 transitions. [2021-10-11 02:25:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:54,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2021-10-11 02:25:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:54,013 INFO L225 Difference]: With dead ends: 1141 [2021-10-11 02:25:54,013 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:25:54,014 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 02:25:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:25:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2021-10-11 02:25:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:25:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 787 transitions. [2021-10-11 02:25:54,035 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 787 transitions. Word has length 97 [2021-10-11 02:25:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:54,035 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 787 transitions. [2021-10-11 02:25:54,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 787 transitions. [2021-10-11 02:25:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:25:54,039 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:54,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:25:54,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:54,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:54,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1376082555, now seen corresponding path program 1 times [2021-10-11 02:25:54,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:54,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474009747] [2021-10-11 02:25:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:25:54,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474009747] [2021-10-11 02:25:54,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:54,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:54,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305725385] [2021-10-11 02:25:54,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:54,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:54,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:54,139 INFO L87 Difference]: Start difference. First operand 571 states and 787 transitions. Second operand 4 states. [2021-10-11 02:25:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:54,671 INFO L93 Difference]: Finished difference Result 1496 states and 2052 transitions. [2021-10-11 02:25:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:54,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2021-10-11 02:25:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:54,682 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:25:54,682 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:25:54,684 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 02:25:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:25:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:25:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:25:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1053 transitions. [2021-10-11 02:25:54,715 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1053 transitions. Word has length 103 [2021-10-11 02:25:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:54,722 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1053 transitions. [2021-10-11 02:25:54,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1053 transitions. [2021-10-11 02:25:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-11 02:25:54,725 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:54,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:25:54,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:54,726 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:54,728 INFO L82 PathProgramCache]: Analyzing trace with hash 918721188, now seen corresponding path program 1 times [2021-10-11 02:25:54,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:54,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247164854] [2021-10-11 02:25:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:25:54,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247164854] [2021-10-11 02:25:54,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:54,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:54,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108480416] [2021-10-11 02:25:54,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:54,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:54,901 INFO L87 Difference]: Start difference. First operand 784 states and 1053 transitions. Second operand 3 states. [2021-10-11 02:25:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:55,228 INFO L93 Difference]: Finished difference Result 1709 states and 2311 transitions. [2021-10-11 02:25:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:55,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2021-10-11 02:25:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:55,235 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:25:55,235 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:25:55,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:25:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-10-11 02:25:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:25:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1211 transitions. [2021-10-11 02:25:55,265 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1211 transitions. Word has length 121 [2021-10-11 02:25:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:55,265 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1211 transitions. [2021-10-11 02:25:55,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1211 transitions. [2021-10-11 02:25:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-11 02:25:55,268 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:55,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:25:55,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:55,269 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1163048265, now seen corresponding path program 1 times [2021-10-11 02:25:55,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:55,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18395340] [2021-10-11 02:25:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:55,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18395340] [2021-10-11 02:25:55,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:55,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:55,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135414813] [2021-10-11 02:25:55,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:55,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:55,374 INFO L87 Difference]: Start difference. First operand 926 states and 1211 transitions. Second operand 3 states. [2021-10-11 02:25:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:55,721 INFO L93 Difference]: Finished difference Result 2064 states and 2727 transitions. [2021-10-11 02:25:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:55,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2021-10-11 02:25:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:55,729 INFO L225 Difference]: With dead ends: 2064 [2021-10-11 02:25:55,729 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:25:55,731 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 02:25:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:25:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-11 02:25:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:25:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1383 transitions. [2021-10-11 02:25:55,761 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1383 transitions. Word has length 130 [2021-10-11 02:25:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:55,762 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1383 transitions. [2021-10-11 02:25:55,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1383 transitions. [2021-10-11 02:25:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-11 02:25:55,766 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:55,766 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:25:55,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:55,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2126445930, now seen corresponding path program 1 times [2021-10-11 02:25:55,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:55,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272665310] [2021-10-11 02:25:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:25:55,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272665310] [2021-10-11 02:25:55,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:55,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:55,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450893031] [2021-10-11 02:25:55,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:55,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:55,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:55,880 INFO L87 Difference]: Start difference. First operand 1068 states and 1383 transitions. Second operand 3 states. [2021-10-11 02:25:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:56,212 INFO L93 Difference]: Finished difference Result 2277 states and 2917 transitions. [2021-10-11 02:25:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:56,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2021-10-11 02:25:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:56,220 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:25:56,220 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:25:56,222 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 02:25:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:25:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:25:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:25:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1371 transitions. [2021-10-11 02:25:56,273 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1371 transitions. Word has length 153 [2021-10-11 02:25:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:56,273 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1371 transitions. [2021-10-11 02:25:56,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1371 transitions. [2021-10-11 02:25:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-10-11 02:25:56,280 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:56,280 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:56,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:25:56,280 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:56,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1638897923, now seen corresponding path program 1 times [2021-10-11 02:25:56,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:56,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597536500] [2021-10-11 02:25:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:25:56,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597536500] [2021-10-11 02:25:56,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077383554] [2021-10-11 02:25:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/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 02:25:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:56,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:56,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-11 02:25:57,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-11 02:25:57,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:57,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:25:57,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170739127] [2021-10-11 02:25:57,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:57,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:57,527 INFO L87 Difference]: Start difference. First operand 1068 states and 1371 transitions. Second operand 3 states. [2021-10-11 02:25:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:57,851 INFO L93 Difference]: Finished difference Result 2135 states and 2741 transitions. [2021-10-11 02:25:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:57,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2021-10-11 02:25:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:57,858 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:25:57,858 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:25:57,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:25:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-10-11 02:25:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:25:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1305 transitions. [2021-10-11 02:25:57,887 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1305 transitions. Word has length 218 [2021-10-11 02:25:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:57,888 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1305 transitions. [2021-10-11 02:25:57,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1305 transitions. [2021-10-11 02:25:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-10-11 02:25:57,892 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:57,892 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 02:25:58,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:25:58,107 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash 228343667, now seen corresponding path program 1 times [2021-10-11 02:25:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144193363] [2021-10-11 02:25:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,368 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 02:25:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144193363] [2021-10-11 02:25:58,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:58,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680348247] [2021-10-11 02:25:58,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:58,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:58,371 INFO L87 Difference]: Start difference. First operand 1068 states and 1305 transitions. Second operand 3 states. [2021-10-11 02:25:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,702 INFO L93 Difference]: Finished difference Result 2346 states and 2849 transitions. [2021-10-11 02:25:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:58,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2021-10-11 02:25:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,703 INFO L225 Difference]: With dead ends: 2346 [2021-10-11 02:25:58,703 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:58,706 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 02:25:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:58,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2021-10-11 02:25:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,707 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:58,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:58,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:58,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:25:58,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:58,917 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2021-10-11 02:25:59,114 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2021-10-11 02:25:59,117 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:25:59,117 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:25:59,117 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:25:59,117 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:25:59,118 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:25:59,119 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:25:59,120 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:25:59,121 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:25:59,128 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2021-10-11 02:25:59,128 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:25:59,129 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:25:59,130 INFO L262 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:25:59,131 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 495) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2021-10-11 02:25:59,132 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:25:59,133 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:25:59,133 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:25:59,133 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:25:59,133 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:25:59,133 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:25:59,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:59 BoogieIcfgContainer [2021-10-11 02:25:59,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:59,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:59,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:59,157 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:59,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:50" (3/4) ... [2021-10-11 02:25:59,160 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:59,189 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:25:59,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:25:59,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:25:59,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:25:59,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a693c3af-fddf-489d-bdfc-72df66859ff6/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:59,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:59,386 INFO L168 Benchmark]: Toolchain (without parser) took 12020.37 ms. Allocated memory was 96.5 MB in the beginning and 297.8 MB in the end (delta: 201.3 MB). Free memory was 60.8 MB in the beginning and 227.9 MB in the end (delta: -167.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,387 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 68.0 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:59,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.08 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 56.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.72 ms. Allocated memory is still 96.5 MB. Free memory was 56.1 MB in the beginning and 50.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,388 INFO L168 Benchmark]: Boogie Preprocessor took 60.39 ms. Allocated memory is still 96.5 MB. Free memory was 50.6 MB in the beginning and 46.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,389 INFO L168 Benchmark]: RCFGBuilder took 2330.64 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 46.0 MB in the beginning and 66.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,390 INFO L168 Benchmark]: TraceAbstraction took 8674.27 ms. Allocated memory was 130.0 MB in the beginning and 297.8 MB in the end (delta: 167.8 MB). Free memory was 66.5 MB in the beginning and 242.6 MB in the end (delta: -176.1 MB). Peak memory consumption was 143.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,390 INFO L168 Benchmark]: Witness Printer took 228.18 ms. Allocated memory is still 297.8 MB. Free memory was 242.6 MB in the beginning and 227.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 68.0 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 627.08 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 56.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.72 ms. Allocated memory is still 96.5 MB. Free memory was 56.1 MB in the beginning and 50.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.39 ms. Allocated memory is still 96.5 MB. Free memory was 50.6 MB in the beginning and 46.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2330.64 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 46.0 MB in the beginning and 66.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8674.27 ms. Allocated memory was 130.0 MB in the beginning and 297.8 MB in the end (delta: 167.8 MB). Free memory was 66.5 MB in the beginning and 242.6 MB in the end (delta: -176.1 MB). Peak memory consumption was 143.7 MB. Max. memory is 16.1 GB. * Witness Printer took 228.18 ms. Allocated memory is still 297.8 MB. Free memory was 242.6 MB in the beginning and 227.9 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: 495]: 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: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 547 SDtfs, 610 SDslu, 48 SDs, 0 SdLazy, 2366 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2244 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 234 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1576 NumberOfCodeBlocks, 1576 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1496/1584 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...