./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62866bd9334bc9e66fef5c8a3ab686f8cd6aa0c9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:37,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:37,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:37,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:37,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:37,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:37,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:37,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:37,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:37,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:37,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:37,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:37,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:37,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:37,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:37,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:37,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:37,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:37,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:37,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:37,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:37,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:37,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:37,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:37,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:37,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:37,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:37,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:37,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:37,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:37,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:37,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:37,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:37,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:37,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:37,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:37,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:37,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:37,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:37,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:37,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:37,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:37,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:37,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:37,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:37,207 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:37,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:37,208 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:37,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:37,209 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:37,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:37,209 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:37,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:37,210 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:37,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:37,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:37,211 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:37,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:37,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:37,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:37,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:37,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:37,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:37,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:37,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:37,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:37,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:37,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:37,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:37,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:37,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:37,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:37,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:37,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:37,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:37,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:37,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:37,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:37,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:37,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:37,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:37,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:37,219 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62866bd9334bc9e66fef5c8a3ab686f8cd6aa0c9 [2020-11-28 07:42:37,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:37,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:37,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:37,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:37,546 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:37,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2020-11-28 07:42:37,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/data/8e8aa5027/a38a119f56784339b7e200a200dce72d/FLAG908b8e3c2 [2020-11-28 07:42:38,277 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:38,278 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2020-11-28 07:42:38,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/data/8e8aa5027/a38a119f56784339b7e200a200dce72d/FLAG908b8e3c2 [2020-11-28 07:42:38,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/data/8e8aa5027/a38a119f56784339b7e200a200dce72d [2020-11-28 07:42:38,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:38,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:38,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:38,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:38,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:38,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:38" (1/1) ... [2020-11-28 07:42:38,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44812229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:38, skipping insertion in model container [2020-11-28 07:42:38,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:38" (1/1) ... [2020-11-28 07:42:38,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:38,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:39,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:39,156 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:39,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:39,330 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:39,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39 WrapperNode [2020-11-28 07:42:39,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:39,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:39,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:39,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:39,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:39,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:39,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:39,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:39,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:39,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:39,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:39,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:39,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:39,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:41,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:41,952 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:41,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:41 BoogieIcfgContainer [2020-11-28 07:42:41,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:41,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:41,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:41,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:41,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:38" (1/3) ... [2020-11-28 07:42:41,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f5f3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:41, skipping insertion in model container [2020-11-28 07:42:41,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (2/3) ... [2020-11-28 07:42:41,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f5f3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:41, skipping insertion in model container [2020-11-28 07:42:41,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:41" (3/3) ... [2020-11-28 07:42:41,964 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2020-11-28 07:42:41,979 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:41,984 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:41,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:42,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:42,031 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:42,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:42,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:42,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:42,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:42,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:42,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:42:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:42:42,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:42,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:42,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:42,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1520704877, now seen corresponding path program 1 times [2020-11-28 07:42:42,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:42,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036720210] [2020-11-28 07:42:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:42,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036720210] [2020-11-28 07:42:42,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:42,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:42,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862954706] [2020-11-28 07:42:42,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:42,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:42,600 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:42:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:43,203 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:42:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:43,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:42:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:43,229 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:42:43,229 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:42:43,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:42:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:42:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:42:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-28 07:42:43,309 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-28 07:42:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:43,311 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-28 07:42:43,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-28 07:42:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:42:43,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:43,317 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] [2020-11-28 07:42:43,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:43,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141310, now seen corresponding path program 1 times [2020-11-28 07:42:43,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:43,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193218815] [2020-11-28 07:42:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:43,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193218815] [2020-11-28 07:42:43,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:43,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:43,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89724165] [2020-11-28 07:42:43,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:43,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:43,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:43,425 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-28 07:42:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:43,947 INFO L93 Difference]: Finished difference Result 360 states and 654 transitions. [2020-11-28 07:42:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:43,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:42:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:43,950 INFO L225 Difference]: With dead ends: 360 [2020-11-28 07:42:43,951 INFO L226 Difference]: Without dead ends: 216 [2020-11-28 07:42:43,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-28 07:42:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-28 07:42:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 07:42:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-11-28 07:42:43,969 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 77 [2020-11-28 07:42:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:43,970 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-11-28 07:42:43,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-11-28 07:42:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:42:43,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:43,981 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] [2020-11-28 07:42:43,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:43,982 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:43,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1832093892, now seen corresponding path program 1 times [2020-11-28 07:42:43,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:43,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571480336] [2020-11-28 07:42:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 07:42:44,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571480336] [2020-11-28 07:42:44,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:44,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:44,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079838938] [2020-11-28 07:42:44,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:44,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:44,137 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 3 states. [2020-11-28 07:42:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:44,618 INFO L93 Difference]: Finished difference Result 644 states and 1131 transitions. [2020-11-28 07:42:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:44,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-28 07:42:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:44,632 INFO L225 Difference]: With dead ends: 644 [2020-11-28 07:42:44,632 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:42:44,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:42:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-11-28 07:42:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-28 07:42:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 610 transitions. [2020-11-28 07:42:44,658 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 610 transitions. Word has length 78 [2020-11-28 07:42:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:44,659 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 610 transitions. [2020-11-28 07:42:44,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 610 transitions. [2020-11-28 07:42:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:42:44,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:44,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:44,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:44,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:44,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1090222253, now seen corresponding path program 1 times [2020-11-28 07:42:44,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:44,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063695700] [2020-11-28 07:42:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:44,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063695700] [2020-11-28 07:42:44,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:44,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:44,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917239119] [2020-11-28 07:42:44,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:44,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:44,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:44,719 INFO L87 Difference]: Start difference. First operand 358 states and 610 transitions. Second operand 3 states. [2020-11-28 07:42:45,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:45,194 INFO L93 Difference]: Finished difference Result 1070 states and 1827 transitions. [2020-11-28 07:42:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:45,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:42:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:45,198 INFO L225 Difference]: With dead ends: 1070 [2020-11-28 07:42:45,198 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:42:45,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:42:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 500. [2020-11-28 07:42:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-11-28 07:42:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 783 transitions. [2020-11-28 07:42:45,238 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 783 transitions. Word has length 84 [2020-11-28 07:42:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,239 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 783 transitions. [2020-11-28 07:42:45,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 783 transitions. [2020-11-28 07:42:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-28 07:42:45,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:45,241 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] [2020-11-28 07:42:45,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:45,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2026353587, now seen corresponding path program 1 times [2020-11-28 07:42:45,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:45,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505016435] [2020-11-28 07:42:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:42:45,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505016435] [2020-11-28 07:42:45,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:45,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:45,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18683528] [2020-11-28 07:42:45,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:45,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:45,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:45,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,369 INFO L87 Difference]: Start difference. First operand 500 states and 783 transitions. Second operand 3 states. [2020-11-28 07:42:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:45,887 INFO L93 Difference]: Finished difference Result 1141 states and 1761 transitions. [2020-11-28 07:42:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:45,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-11-28 07:42:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:45,892 INFO L225 Difference]: With dead ends: 1141 [2020-11-28 07:42:45,893 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:42:45,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:42:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-28 07:42:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:42:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 848 transitions. [2020-11-28 07:42:45,933 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 848 transitions. Word has length 88 [2020-11-28 07:42:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,933 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 848 transitions. [2020-11-28 07:42:45,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 848 transitions. [2020-11-28 07:42:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-28 07:42:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:45,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:45,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:45,936 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash 128887941, now seen corresponding path program 1 times [2020-11-28 07:42:45,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:45,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070234246] [2020-11-28 07:42:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:45,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070234246] [2020-11-28 07:42:45,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:45,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:45,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275969815] [2020-11-28 07:42:45,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:45,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,999 INFO L87 Difference]: Start difference. First operand 571 states and 848 transitions. Second operand 3 states. [2020-11-28 07:42:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:46,465 INFO L93 Difference]: Finished difference Result 1283 states and 1891 transitions. [2020-11-28 07:42:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:46,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-11-28 07:42:46,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:46,470 INFO L225 Difference]: With dead ends: 1283 [2020-11-28 07:42:46,470 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:42:46,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:42:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-11-28 07:42:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-28 07:42:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1020 transitions. [2020-11-28 07:42:46,493 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1020 transitions. Word has length 100 [2020-11-28 07:42:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:46,494 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1020 transitions. [2020-11-28 07:42:46,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1020 transitions. [2020-11-28 07:42:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:42:46,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:46,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:46,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:46,497 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:46,505 INFO L82 PathProgramCache]: Analyzing trace with hash 832576395, now seen corresponding path program 1 times [2020-11-28 07:42:46,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:46,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074019963] [2020-11-28 07:42:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:46,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074019963] [2020-11-28 07:42:46,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:46,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:46,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747754471] [2020-11-28 07:42:46,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:46,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:46,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:46,645 INFO L87 Difference]: Start difference. First operand 713 states and 1020 transitions. Second operand 4 states. [2020-11-28 07:42:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:47,352 INFO L93 Difference]: Finished difference Result 1638 states and 2300 transitions. [2020-11-28 07:42:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:47,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-28 07:42:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:47,358 INFO L225 Difference]: With dead ends: 1638 [2020-11-28 07:42:47,358 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:42:47,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:42:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-28 07:42:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:42:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1186 transitions. [2020-11-28 07:42:47,390 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1186 transitions. Word has length 104 [2020-11-28 07:42:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:47,392 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1186 transitions. [2020-11-28 07:42:47,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1186 transitions. [2020-11-28 07:42:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-28 07:42:47,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:47,398 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] [2020-11-28 07:42:47,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:47,399 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1455239238, now seen corresponding path program 1 times [2020-11-28 07:42:47,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:47,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465833517] [2020-11-28 07:42:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:47,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465833517] [2020-11-28 07:42:47,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:47,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:42:47,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265969156] [2020-11-28 07:42:47,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:47,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:47,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:47,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:47,724 INFO L87 Difference]: Start difference. First operand 855 states and 1186 transitions. Second operand 5 states. [2020-11-28 07:42:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:48,614 INFO L93 Difference]: Finished difference Result 2206 states and 3045 transitions. [2020-11-28 07:42:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:48,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-11-28 07:42:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:48,623 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:42:48,624 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:42:48,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:42:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-28 07:42:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:42:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2020-11-28 07:42:48,660 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 130 [2020-11-28 07:42:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:48,660 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2020-11-28 07:42:48,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2020-11-28 07:42:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-28 07:42:48,693 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:48,693 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:48,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:48,694 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1370508181, now seen corresponding path program 1 times [2020-11-28 07:42:48,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:48,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477892960] [2020-11-28 07:42:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 07:42:48,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477892960] [2020-11-28 07:42:48,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:48,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:48,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552313283] [2020-11-28 07:42:48,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:48,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:48,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:48,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:48,798 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand 3 states. [2020-11-28 07:42:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:49,320 INFO L93 Difference]: Finished difference Result 2632 states and 3613 transitions. [2020-11-28 07:42:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:49,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-11-28 07:42:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:49,330 INFO L225 Difference]: With dead ends: 2632 [2020-11-28 07:42:49,330 INFO L226 Difference]: Without dead ends: 1494 [2020-11-28 07:42:49,332 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 [2020-11-28 07:42:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-11-28 07:42:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1210. [2020-11-28 07:42:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1666 transitions. [2020-11-28 07:42:49,368 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1666 transitions. Word has length 157 [2020-11-28 07:42:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:49,369 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1666 transitions. [2020-11-28 07:42:49,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1666 transitions. [2020-11-28 07:42:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-28 07:42:49,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:49,377 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] [2020-11-28 07:42:49,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:49,378 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1182847754, now seen corresponding path program 1 times [2020-11-28 07:42:49,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:49,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30185608] [2020-11-28 07:42:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 92 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:42:49,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30185608] [2020-11-28 07:42:49,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306787972] [2020-11-28 07:42:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:49,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:49,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 07:42:50,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 07:42:50,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:50,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-28 07:42:50,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440907217] [2020-11-28 07:42:50,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:50,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:50,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:50,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:50,168 INFO L87 Difference]: Start difference. First operand 1210 states and 1666 transitions. Second operand 3 states. [2020-11-28 07:42:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:50,652 INFO L93 Difference]: Finished difference Result 2417 states and 3330 transitions. [2020-11-28 07:42:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:50,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-28 07:42:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:50,654 INFO L225 Difference]: With dead ends: 2417 [2020-11-28 07:42:50,654 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:50,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:50,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-28 07:42:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:50,658 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:50,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:50,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:50,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:42:50,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:51,100 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-11-28 07:42:51,218 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-11-28 07:42:51,222 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:42:51,222 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:42:51,222 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:42:51,223 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:42:51,224 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:51,225 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (or (not (= ~a8~0 13)) (<= ~a21~0 0) (and (= ~a21~0 1) (= ~a20~0 1) (= ~a17~0 1)) (and (<= ~a16~0 5) (not (= ~a7~0 1)))) [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:42:51,226 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:42:51,227 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (or (not (= ~a8~0 13)) (<= ~a21~0 0) (and (= ~a21~0 1) (= ~a20~0 1) (= ~a17~0 1)) (and (<= ~a16~0 5) (not (= ~a7~0 1)))) [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:42:51,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:42:51,229 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:42:51,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:51 BoogieIcfgContainer [2020-11-28 07:42:51,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:51,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:51,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:51,261 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:51,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:41" (3/4) ... [2020-11-28 07:42:51,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:51,304 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:42:51,305 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:42:51,307 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:42:51,309 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:42:51,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f75fa02e-16ba-48cf-b256-5f7802ac15f3/bin/utaipan/witness.graphml [2020-11-28 07:42:51,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:51,483 INFO L168 Benchmark]: Toolchain (without parser) took 12866.21 ms. Allocated memory was 88.1 MB in the beginning and 310.4 MB in the end (delta: 222.3 MB). Free memory was 53.1 MB in the beginning and 150.6 MB in the end (delta: -97.5 MB). Peak memory consumption was 123.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,484 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:51,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.45 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 48.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.88 ms. Allocated memory is still 88.1 MB. Free memory was 48.6 MB in the beginning and 43.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,485 INFO L168 Benchmark]: Boogie Preprocessor took 104.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 38.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,485 INFO L168 Benchmark]: RCFGBuilder took 2397.11 ms. Allocated memory was 88.1 MB in the beginning and 153.1 MB in the end (delta: 65.0 MB). Free memory was 38.4 MB in the beginning and 116.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,486 INFO L168 Benchmark]: TraceAbstraction took 9303.63 ms. Allocated memory was 153.1 MB in the beginning and 310.4 MB in the end (delta: 157.3 MB). Free memory was 116.7 MB in the beginning and 166.3 MB in the end (delta: -49.6 MB). Peak memory consumption was 107.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,486 INFO L168 Benchmark]: Witness Printer took 221.59 ms. Allocated memory is still 310.4 MB. Free memory was 166.3 MB in the beginning and 150.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 709.45 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 48.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.88 ms. Allocated memory is still 88.1 MB. Free memory was 48.6 MB in the beginning and 43.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 38.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2397.11 ms. Allocated memory was 88.1 MB in the beginning and 153.1 MB in the end (delta: 65.0 MB). Free memory was 38.4 MB in the beginning and 116.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9303.63 ms. Allocated memory was 153.1 MB in the beginning and 310.4 MB in the end (delta: 157.3 MB). Free memory was 116.7 MB in the beginning and 166.3 MB in the end (delta: -49.6 MB). Peak memory consumption was 107.7 MB. Max. memory is 16.1 GB. * Witness Printer took 221.59 ms. Allocated memory is still 310.4 MB. Free memory was 166.3 MB in the beginning and 150.6 MB in the end (delta: 15.7 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((!(a8 == 13) || a21 <= 0) || ((a21 == 1 && a20 == 1) && a17 == 1)) || (a16 <= 5 && !(a7 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((!(a8 == 13) || a21 <= 0) || ((a21 == 1 && a20 == 1) && a17 == 1)) || (a16 <= 5 && !(a7 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 690 SDslu, 49 SDs, 0 SdLazy, 2516 SolverSat, 642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 53 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4998 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1333 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1543 ConstructedInterpolants, 0 QuantifiedInterpolants, 799870 SizeOfPredicates, 1 NumberOfNonLiveVariables, 474 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 1148/1240 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...