./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.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_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c -s /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/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 a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:55:44,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:55:44,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:55:45,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:55:45,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:55:45,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:55:45,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:55:45,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:55:45,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:55:45,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:55:45,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:55:45,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:55:45,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:55:45,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:55:45,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:55:45,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:55:45,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:55:45,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:55:45,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:55:45,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:55:45,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:55:45,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:55:45,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:55:45,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:55:45,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:55:45,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:55:45,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:55:45,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:55:45,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:55:45,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:55:45,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:55:45,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:55:45,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:55:45,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:55:45,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:55:45,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:55:45,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:55:45,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:55:45,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:55:45,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:55:45,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:55:45,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:55:45,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:55:45,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:55:45,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:55:45,192 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:55:45,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:55:45,193 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:55:45,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:55:45,194 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:55:45,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:55:45,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:55:45,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:55:45,197 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:55:45,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:55:45,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:55:45,198 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:55:45,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:55:45,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:55:45,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:55:45,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:55:45,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:55:45,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:55:45,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:55:45,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:55:45,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:55:45,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:55:45,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:55:45,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:55:45,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:55:45,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:55:45,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:55:45,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:55:45,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:45,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:55:45,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:55:45,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:55:45,207 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:55:45,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:55:45,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:55:45,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:55:45,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:55:45,209 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_47540a77-eae6-40ab-9f57-349e5dd0823b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 [2020-11-22 12:55:45,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:55:45,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:55:45,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:55:45,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:55:45,592 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:55:45,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-11-22 12:55:45,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/data/8f0d4c1bb/a6b83adb1233467ab040dc77e59172e2/FLAG73a83859c [2020-11-22 12:55:46,397 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:55:46,398 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-11-22 12:55:46,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/data/8f0d4c1bb/a6b83adb1233467ab040dc77e59172e2/FLAG73a83859c [2020-11-22 12:55:46,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/data/8f0d4c1bb/a6b83adb1233467ab040dc77e59172e2 [2020-11-22 12:55:46,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:55:46,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:55:46,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:46,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:55:46,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:55:46,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:46" (1/1) ... [2020-11-22 12:55:46,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cf1737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:46, skipping insertion in model container [2020-11-22 12:55:46,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:46" (1/1) ... [2020-11-22 12:55:46,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:55:46,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:55:47,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:47,294 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:55:47,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:47,446 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:55:47,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47 WrapperNode [2020-11-22 12:55:47,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:47,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:47,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:55:47,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:55:47,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:47,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:55:47,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:55:47,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:55:47,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... [2020-11-22 12:55:47,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:55:47,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:55:47,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:55:47,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:55:47,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/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 [2020-11-22 12:55:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:55:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:55:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:55:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:55:51,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:55:51,213 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:55:51,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:51 BoogieIcfgContainer [2020-11-22 12:55:51,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:55:51,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:55:51,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:55:51,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:55:51,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:55:46" (1/3) ... [2020-11-22 12:55:51,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa68d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:51, skipping insertion in model container [2020-11-22 12:55:51,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:47" (2/3) ... [2020-11-22 12:55:51,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa68d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:51, skipping insertion in model container [2020-11-22 12:55:51,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:51" (3/3) ... [2020-11-22 12:55:51,230 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-11-22 12:55:51,244 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:55:51,252 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:55:51,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:55:51,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:55:51,312 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:55:51,312 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:55:51,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:55:51,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:55:51,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:55:51,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:55:51,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:55:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 12:55:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 12:55:51,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:51,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:51,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -216536816, now seen corresponding path program 1 times [2020-11-22 12:55:51,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:51,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121565425] [2020-11-22 12:55:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:51,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121565425] [2020-11-22 12:55:51,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:51,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:51,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472280372] [2020-11-22 12:55:51,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:51,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:51,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:51,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:51,942 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 12:55:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:52,810 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 12:55:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:52,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 12:55:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:52,835 INFO L225 Difference]: With dead ends: 251 [2020-11-22 12:55:52,835 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:55:52,843 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 [2020-11-22 12:55:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:55:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:55:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:55:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-22 12:55:52,940 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-22 12:55:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:52,943 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-22 12:55:52,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-22 12:55:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-22 12:55:52,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:52,954 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:52,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:52,955 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:52,959 INFO L82 PathProgramCache]: Analyzing trace with hash -125425685, now seen corresponding path program 1 times [2020-11-22 12:55:52,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:52,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550795282] [2020-11-22 12:55:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:53,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550795282] [2020-11-22 12:55:53,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:53,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:53,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003179332] [2020-11-22 12:55:53,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:53,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:53,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:53,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:53,214 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-22 12:55:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:53,881 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2020-11-22 12:55:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:53,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-22 12:55:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:53,885 INFO L225 Difference]: With dead ends: 405 [2020-11-22 12:55:53,885 INFO L226 Difference]: Without dead ends: 243 [2020-11-22 12:55:53,887 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 [2020-11-22 12:55:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-22 12:55:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-22 12:55:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-22 12:55:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 398 transitions. [2020-11-22 12:55:53,907 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 398 transitions. Word has length 85 [2020-11-22 12:55:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:53,907 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 398 transitions. [2020-11-22 12:55:53,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 398 transitions. [2020-11-22 12:55:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-22 12:55:53,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:53,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:53,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:53,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:53,912 INFO L82 PathProgramCache]: Analyzing trace with hash 97036085, now seen corresponding path program 1 times [2020-11-22 12:55:53,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:53,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476819932] [2020-11-22 12:55:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:54,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476819932] [2020-11-22 12:55:54,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560147396] [2020-11-22 12:55:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/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 [2020-11-22 12:55:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:54,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:55:54,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:55:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:55:54,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:55:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:55:54,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:55:54,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 12:55:54,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879581654] [2020-11-22 12:55:54,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:54,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:54,435 INFO L87 Difference]: Start difference. First operand 243 states and 398 transitions. Second operand 3 states. [2020-11-22 12:55:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:55,214 INFO L93 Difference]: Finished difference Result 725 states and 1191 transitions. [2020-11-22 12:55:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:55,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-22 12:55:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:55,220 INFO L225 Difference]: With dead ends: 725 [2020-11-22 12:55:55,220 INFO L226 Difference]: Without dead ends: 483 [2020-11-22 12:55:55,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-22 12:55:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-22 12:55:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 12:55:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 758 transitions. [2020-11-22 12:55:55,291 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 758 transitions. Word has length 89 [2020-11-22 12:55:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:55,293 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 758 transitions. [2020-11-22 12:55:55,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 758 transitions. [2020-11-22 12:55:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 12:55:55,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:55,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:55,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:55:55,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:55,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1698413543, now seen corresponding path program 1 times [2020-11-22 12:55:55,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:55,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623426769] [2020-11-22 12:55:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:55:55,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623426769] [2020-11-22 12:55:55,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027514302] [2020-11-22 12:55:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:55:55,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:55:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:55:55,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:55:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:55:55,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:55:55,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-22 12:55:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367194339] [2020-11-22 12:55:55,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:55,932 INFO L87 Difference]: Start difference. First operand 483 states and 758 transitions. Second operand 4 states. [2020-11-22 12:55:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:56,927 INFO L93 Difference]: Finished difference Result 1125 states and 1790 transitions. [2020-11-22 12:55:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:56,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-22 12:55:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:56,934 INFO L225 Difference]: With dead ends: 1125 [2020-11-22 12:55:56,934 INFO L226 Difference]: Without dead ends: 643 [2020-11-22 12:55:56,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-22 12:55:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-22 12:55:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-22 12:55:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 943 transitions. [2020-11-22 12:55:56,997 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 943 transitions. Word has length 98 [2020-11-22 12:55:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:56,998 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 943 transitions. [2020-11-22 12:55:56,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 943 transitions. [2020-11-22 12:55:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-22 12:55:57,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:57,004 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:57,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:57,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1884255565, now seen corresponding path program 1 times [2020-11-22 12:55:57,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:57,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742693852] [2020-11-22 12:55:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:55:57,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742693852] [2020-11-22 12:55:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:57,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:57,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113194266] [2020-11-22 12:55:57,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:57,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:57,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:57,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:57,326 INFO L87 Difference]: Start difference. First operand 643 states and 943 transitions. Second operand 3 states. [2020-11-22 12:55:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,014 INFO L93 Difference]: Finished difference Result 1845 states and 2695 transitions. [2020-11-22 12:55:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:58,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-22 12:55:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:58,027 INFO L225 Difference]: With dead ends: 1845 [2020-11-22 12:55:58,027 INFO L226 Difference]: Without dead ends: 1203 [2020-11-22 12:55:58,030 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 [2020-11-22 12:55:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-22 12:55:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-11-22 12:55:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-22 12:55:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1613 transitions. [2020-11-22 12:55:58,086 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1613 transitions. Word has length 99 [2020-11-22 12:55:58,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,087 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1613 transitions. [2020-11-22 12:55:58,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1613 transitions. [2020-11-22 12:55:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-22 12:55:58,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:58,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:55:58,096 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:58,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1362970799, now seen corresponding path program 1 times [2020-11-22 12:55:58,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:58,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840447094] [2020-11-22 12:55:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-22 12:55:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840447094] [2020-11-22 12:55:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019785662] [2020-11-22 12:55:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:55:58,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:55:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-22 12:55:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:55:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-22 12:55:58,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:55:58,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 12:55:58,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056199821] [2020-11-22 12:55:58,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:58,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:58,385 INFO L87 Difference]: Start difference. First operand 1203 states and 1613 transitions. Second operand 3 states. [2020-11-22 12:55:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,795 INFO L93 Difference]: Finished difference Result 2325 states and 3100 transitions. [2020-11-22 12:55:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:58,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-22 12:55:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:58,804 INFO L225 Difference]: With dead ends: 2325 [2020-11-22 12:55:58,805 INFO L226 Difference]: Without dead ends: 1123 [2020-11-22 12:55:58,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-22 12:55:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-11-22 12:55:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-22 12:55:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1433 transitions. [2020-11-22 12:55:58,849 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1433 transitions. Word has length 104 [2020-11-22 12:55:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,850 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1433 transitions. [2020-11-22 12:55:58,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1433 transitions. [2020-11-22 12:55:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-22 12:55:58,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:59,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1863115076, now seen corresponding path program 1 times [2020-11-22 12:55:59,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191420561] [2020-11-22 12:55:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:55:59,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191420561] [2020-11-22 12:55:59,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012788187] [2020-11-22 12:55:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:55:59,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:55:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:55:59,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:55:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:55:59,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:55:59,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:55:59,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648206163] [2020-11-22 12:55:59,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:59,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:59,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:59,538 INFO L87 Difference]: Start difference. First operand 1123 states and 1433 transitions. Second operand 3 states. [2020-11-22 12:56:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:00,138 INFO L93 Difference]: Finished difference Result 2485 states and 3195 transitions. [2020-11-22 12:56:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:00,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-22 12:56:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:00,146 INFO L225 Difference]: With dead ends: 2485 [2020-11-22 12:56:00,147 INFO L226 Difference]: Without dead ends: 1363 [2020-11-22 12:56:00,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-11-22 12:56:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2020-11-22 12:56:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-11-22 12:56:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1683 transitions. [2020-11-22 12:56:00,186 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1683 transitions. Word has length 122 [2020-11-22 12:56:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:00,187 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1683 transitions. [2020-11-22 12:56:00,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1683 transitions. [2020-11-22 12:56:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-22 12:56:00,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:00,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:00,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:00,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1300351849, now seen corresponding path program 1 times [2020-11-22 12:56:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:00,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073675376] [2020-11-22 12:56:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:56:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073675376] [2020-11-22 12:56:00,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:00,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037088891] [2020-11-22 12:56:00,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:00,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:00,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:00,520 INFO L87 Difference]: Start difference. First operand 1363 states and 1683 transitions. Second operand 3 states. [2020-11-22 12:56:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:01,094 INFO L93 Difference]: Finished difference Result 3283 states and 4044 transitions. [2020-11-22 12:56:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:01,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-22 12:56:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:01,095 INFO L225 Difference]: With dead ends: 3283 [2020-11-22 12:56:01,095 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:01,099 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 [2020-11-22 12:56:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:01,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2020-11-22 12:56:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:01,107 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:01,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:01,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:01,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:56:01,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 12:56:01,238 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 12:56:01,239 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 12:56:01,240 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L593(line 593) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:56:01,241 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 12:56:01,242 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-11-22 12:56:01,243 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 12:56:01,243 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 12:56:01,244 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 12:56:01,245 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 12:56:01,246 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 12:56:01,246 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 12:56:01,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:01 BoogieIcfgContainer [2020-11-22 12:56:01,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:01,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:01,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:01,275 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:01,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:51" (3/4) ... [2020-11-22 12:56:01,279 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:01,313 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 12:56:01,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:56:01,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 12:56:01,320 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:56:01,536 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_47540a77-eae6-40ab-9f57-349e5dd0823b/bin/utaipan/witness.graphml [2020-11-22 12:56:01,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:01,539 INFO L168 Benchmark]: Toolchain (without parser) took 14896.82 ms. Allocated memory was 86.0 MB in the beginning and 222.3 MB in the end (delta: 136.3 MB). Free memory was 52.0 MB in the beginning and 110.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,540 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:01,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.82 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 51.8 MB in the beginning and 75.0 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.69 ms. Allocated memory is still 113.2 MB. Free memory was 75.0 MB in the beginning and 69.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,541 INFO L168 Benchmark]: Boogie Preprocessor took 87.35 ms. Allocated memory is still 113.2 MB. Free memory was 69.3 MB in the beginning and 65.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,542 INFO L168 Benchmark]: RCFGBuilder took 3551.65 ms. Allocated memory was 113.2 MB in the beginning and 153.1 MB in the end (delta: 39.8 MB). Free memory was 65.1 MB in the beginning and 104.1 MB in the end (delta: -39.0 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,543 INFO L168 Benchmark]: TraceAbstraction took 10053.95 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 103.1 MB in the beginning and 126.3 MB in the end (delta: -23.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,543 INFO L168 Benchmark]: Witness Printer took 262.27 ms. Allocated memory is still 222.3 MB. Free memory was 126.3 MB in the beginning and 110.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:01,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 791.82 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 51.8 MB in the beginning and 75.0 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.69 ms. Allocated memory is still 113.2 MB. Free memory was 75.0 MB in the beginning and 69.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.35 ms. Allocated memory is still 113.2 MB. Free memory was 69.3 MB in the beginning and 65.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3551.65 ms. Allocated memory was 113.2 MB in the beginning and 153.1 MB in the end (delta: 39.8 MB). Free memory was 65.1 MB in the beginning and 104.1 MB in the end (delta: -39.0 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10053.95 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 103.1 MB in the beginning and 126.3 MB in the end (delta: -23.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 262.27 ms. Allocated memory is still 222.3 MB. Free memory was 126.3 MB in the beginning and 110.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 505 SDtfs, 719 SDslu, 40 SDs, 0 SdLazy, 1880 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 841 GetRequests, 820 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 628 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1616 ConstructedInterpolants, 0 QuantifiedInterpolants, 330670 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1264 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 531/553 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...