./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/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 6e09c4e3c62f766a4d5c6b2391f1938dd364423c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:30:23,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:30:23,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:30:23,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:30:23,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:30:23,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:30:23,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:30:23,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:30:23,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:30:23,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:30:23,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:30:23,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:30:23,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:30:23,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:30:23,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:30:23,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:30:23,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:30:23,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:30:23,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:30:23,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:30:23,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:30:23,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:30:23,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:30:23,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:30:23,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:30:23,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:30:23,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:30:23,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:30:23,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:30:23,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:30:23,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:30:23,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:30:23,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:30:23,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:30:23,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:30:23,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:30:23,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:30:23,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:30:23,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:30:23,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:30:23,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:30:23,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:30:23,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:30:23,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:30:23,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:30:23,139 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:30:23,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:30:23,140 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:30:23,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:30:23,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:30:23,141 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:30:23,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:30:23,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:30:23,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:30:23,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:30:23,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:30:23,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:30:23,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:30:23,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:30:23,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:30:23,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:30:23,144 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_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e09c4e3c62f766a4d5c6b2391f1938dd364423c [2020-12-09 12:30:23,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:30:23,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:30:23,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:30:23,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:30:23,346 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:30:23,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2020-12-09 12:30:23,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/data/2f979cf4c/aa383c6c6da1448eaee716c85f142374/FLAGf06436f5e [2020-12-09 12:30:23,811 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:30:23,811 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2020-12-09 12:30:23,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/data/2f979cf4c/aa383c6c6da1448eaee716c85f142374/FLAGf06436f5e [2020-12-09 12:30:23,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/data/2f979cf4c/aa383c6c6da1448eaee716c85f142374 [2020-12-09 12:30:23,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:30:23,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:30:23,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:30:23,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:30:23,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:30:23,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:30:23" (1/1) ... [2020-12-09 12:30:23,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565e8e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:23, skipping insertion in model container [2020-12-09 12:30:23,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:30:23" (1/1) ... [2020-12-09 12:30:23,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:30:23,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:30:24,093 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/sv-benchmarks/c/eca-rers2012/Problem02_label20.c[16674,16687] [2020-12-09 12:30:24,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:30:24,125 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:30:24,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/sv-benchmarks/c/eca-rers2012/Problem02_label20.c[16674,16687] [2020-12-09 12:30:24,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:30:24,201 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:30:24,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24 WrapperNode [2020-12-09 12:30:24,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:30:24,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:30:24,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:30:24,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:30:24,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:30:24,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:30:24,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:30:24,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:30:24,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... [2020-12-09 12:30:24,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:30:24,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:30:24,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:30:24,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:30:24,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/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 [2020-12-09 12:30:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:30:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:30:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:30:24,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:30:25,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:30:25,740 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 12:30:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:30:25 BoogieIcfgContainer [2020-12-09 12:30:25,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:30:25,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:30:25,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:30:25,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:30:25,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:30:23" (1/3) ... [2020-12-09 12:30:25,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77239aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:30:25, skipping insertion in model container [2020-12-09 12:30:25,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:30:24" (2/3) ... [2020-12-09 12:30:25,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77239aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:30:25, skipping insertion in model container [2020-12-09 12:30:25,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:30:25" (3/3) ... [2020-12-09 12:30:25,751 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2020-12-09 12:30:25,765 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:30:25,768 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:30:25,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:30:25,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:30:25,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:30:25,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:30:25,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:30:25,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:30:25,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:30:25,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:30:25,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:30:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 12:30:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 12:30:25,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:25,813 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] [2020-12-09 12:30:25,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 925944390, now seen corresponding path program 1 times [2020-12-09 12:30:25,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:25,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699791021] [2020-12-09 12:30:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:26,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699791021] [2020-12-09 12:30:26,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:26,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:30:26,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224648041] [2020-12-09 12:30:26,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:26,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:26,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:26,079 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 12:30:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:26,453 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 12:30:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:26,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 12:30:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:26,464 INFO L225 Difference]: With dead ends: 251 [2020-12-09 12:30:26,464 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:30:26,466 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 [2020-12-09 12:30:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:30:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 12:30:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 12:30:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-12-09 12:30:26,504 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-12-09 12:30:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:26,504 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-12-09 12:30:26,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-12-09 12:30:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 12:30:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:26,508 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:26,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:30:26,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1427752818, now seen corresponding path program 1 times [2020-12-09 12:30:26,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:26,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294354196] [2020-12-09 12:30:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:26,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294354196] [2020-12-09 12:30:26,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:26,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:30:26,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234280268] [2020-12-09 12:30:26,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:26,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:26,565 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-12-09 12:30:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:26,722 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-12-09 12:30:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:26,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 12:30:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:26,724 INFO L225 Difference]: With dead ends: 325 [2020-12-09 12:30:26,724 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:30:26,726 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 [2020-12-09 12:30:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:30:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 12:30:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 12:30:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-12-09 12:30:26,737 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-12-09 12:30:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:26,738 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-12-09 12:30:26,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-12-09 12:30:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 12:30:26,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:26,740 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:26,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:30:26,740 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:26,741 INFO L82 PathProgramCache]: Analyzing trace with hash 221744869, now seen corresponding path program 1 times [2020-12-09 12:30:26,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:26,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970315986] [2020-12-09 12:30:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:26,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970315986] [2020-12-09 12:30:26,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:26,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:30:26,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974646682] [2020-12-09 12:30:26,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:26,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:26,811 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-12-09 12:30:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:27,048 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-12-09 12:30:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:27,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 12:30:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:27,050 INFO L225 Difference]: With dead ends: 485 [2020-12-09 12:30:27,050 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 12:30:27,051 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 [2020-12-09 12:30:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 12:30:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 12:30:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 12:30:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 464 transitions. [2020-12-09 12:30:27,066 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 464 transitions. Word has length 98 [2020-12-09 12:30:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:27,066 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 464 transitions. [2020-12-09 12:30:27,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 464 transitions. [2020-12-09 12:30:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-09 12:30:27,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:27,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:27,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:30:27,069 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash 11610095, now seen corresponding path program 1 times [2020-12-09 12:30:27,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:27,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076037175] [2020-12-09 12:30:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:27,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076037175] [2020-12-09 12:30:27,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:27,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:30:27,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57693972] [2020-12-09 12:30:27,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:27,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:27,120 INFO L87 Difference]: Start difference. First operand 323 states and 464 transitions. Second operand 3 states. [2020-12-09 12:30:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:27,392 INFO L93 Difference]: Finished difference Result 885 states and 1298 transitions. [2020-12-09 12:30:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:27,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-09 12:30:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:27,396 INFO L225 Difference]: With dead ends: 885 [2020-12-09 12:30:27,396 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 12:30:27,397 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 [2020-12-09 12:30:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 12:30:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 12:30:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 12:30:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 775 transitions. [2020-12-09 12:30:27,413 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 775 transitions. Word has length 102 [2020-12-09 12:30:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:27,413 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 775 transitions. [2020-12-09 12:30:27,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 775 transitions. [2020-12-09 12:30:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 12:30:27,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:27,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:27,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 12:30:27,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2134438274, now seen corresponding path program 1 times [2020-12-09 12:30:27,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:27,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244725524] [2020-12-09 12:30:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:27,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244725524] [2020-12-09 12:30:27,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:27,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:30:27,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398407071] [2020-12-09 12:30:27,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:27,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:27,454 INFO L87 Difference]: Start difference. First operand 563 states and 775 transitions. Second operand 3 states. [2020-12-09 12:30:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:27,696 INFO L93 Difference]: Finished difference Result 1205 states and 1664 transitions. [2020-12-09 12:30:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:27,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 12:30:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:27,700 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 12:30:27,700 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 12:30:27,701 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 [2020-12-09 12:30:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 12:30:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 12:30:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 12:30:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 850 transitions. [2020-12-09 12:30:27,720 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 850 transitions. Word has length 103 [2020-12-09 12:30:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:27,720 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 850 transitions. [2020-12-09 12:30:27,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 850 transitions. [2020-12-09 12:30:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 12:30:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:27,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:27,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 12:30:27,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2118180792, now seen corresponding path program 1 times [2020-12-09 12:30:27,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293149428] [2020-12-09 12:30:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:27,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293149428] [2020-12-09 12:30:27,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032737622] [2020-12-09 12:30:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/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 [2020-12-09 12:30:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:30:27,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:30:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:30:28,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:30:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:30:28,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 12:30:28,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 12:30:28,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822713300] [2020-12-09 12:30:28,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:28,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:28,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:30:28,160 INFO L87 Difference]: Start difference. First operand 643 states and 850 transitions. Second operand 3 states. [2020-12-09 12:30:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:28,431 INFO L93 Difference]: Finished difference Result 1525 states and 2050 transitions. [2020-12-09 12:30:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:28,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 12:30:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:28,435 INFO L225 Difference]: With dead ends: 1525 [2020-12-09 12:30:28,435 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 12:30:28,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:30:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 12:30:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 803. [2020-12-09 12:30:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 12:30:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1040 transitions. [2020-12-09 12:30:28,452 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1040 transitions. Word has length 107 [2020-12-09 12:30:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:28,453 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1040 transitions. [2020-12-09 12:30:28,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1040 transitions. [2020-12-09 12:30:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 12:30:28,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:28,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:30:28,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-09 12:30:28,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:28,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1177506916, now seen corresponding path program 1 times [2020-12-09 12:30:28,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:28,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211397630] [2020-12-09 12:30:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:30:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211397630] [2020-12-09 12:30:28,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:28,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:30:28,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256920402] [2020-12-09 12:30:28,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:28,700 INFO L87 Difference]: Start difference. First operand 803 states and 1040 transitions. Second operand 3 states. [2020-12-09 12:30:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:28,965 INFO L93 Difference]: Finished difference Result 2005 states and 2594 transitions. [2020-12-09 12:30:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:28,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-12-09 12:30:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:28,970 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 12:30:28,970 INFO L226 Difference]: Without dead ends: 1043 [2020-12-09 12:30:28,971 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 [2020-12-09 12:30:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-09 12:30:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2020-12-09 12:30:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 12:30:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-12-09 12:30:28,992 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 120 [2020-12-09 12:30:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:28,992 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-12-09 12:30:28,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-12-09 12:30:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 12:30:28,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:28,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 12:30:28,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 12:30:28,995 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:28,996 INFO L82 PathProgramCache]: Analyzing trace with hash 964812337, now seen corresponding path program 1 times [2020-12-09 12:30:28,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:28,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939972562] [2020-12-09 12:30:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:30:29,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939972562] [2020-12-09 12:30:29,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:29,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:30:29,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856499118] [2020-12-09 12:30:29,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:29,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:29,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:29,065 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 3 states. [2020-12-09 12:30:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:29,329 INFO L93 Difference]: Finished difference Result 2085 states and 2573 transitions. [2020-12-09 12:30:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:29,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 12:30:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:29,333 INFO L225 Difference]: With dead ends: 2085 [2020-12-09 12:30:29,334 INFO L226 Difference]: Without dead ends: 963 [2020-12-09 12:30:29,335 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 [2020-12-09 12:30:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-09 12:30:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-12-09 12:30:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 12:30:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1144 transitions. [2020-12-09 12:30:29,352 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1144 transitions. Word has length 171 [2020-12-09 12:30:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:29,352 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1144 transitions. [2020-12-09 12:30:29,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1144 transitions. [2020-12-09 12:30:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 12:30:29,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:30:29,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-12-09 12:30:29,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 12:30:29,355 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:30:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:30:29,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1743254966, now seen corresponding path program 1 times [2020-12-09 12:30:29,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:30:29,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411695121] [2020-12-09 12:30:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:30:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:30:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 12:30:29,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411695121] [2020-12-09 12:30:29,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:30:29,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:30:29,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415544724] [2020-12-09 12:30:29,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:30:29,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:30:29,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:30:29,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:30:29,407 INFO L87 Difference]: Start difference. First operand 963 states and 1144 transitions. Second operand 3 states. [2020-12-09 12:30:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:30:29,641 INFO L93 Difference]: Finished difference Result 2003 states and 2399 transitions. [2020-12-09 12:30:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:30:29,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-12-09 12:30:29,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:30:29,642 INFO L225 Difference]: With dead ends: 2003 [2020-12-09 12:30:29,642 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:30:29,644 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 [2020-12-09 12:30:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:30:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:30:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:30:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:30:29,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-12-09 12:30:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:30:29,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:30:29,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:30:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:30:29,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:30:29,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 12:30:29,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 12:30:29,784 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 12:30:29,785 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 479) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 12:30:29,786 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse5 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse2 (= ~a25~0 1)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a19~0 0) .cse0 .cse1) (and .cse2 .cse1 .cse3) (and .cse4 .cse0 .cse1) (and .cse5 (<= 10 ~a28~0) .cse3 .cse1) (and .cse5 .cse4 .cse2 .cse0))) [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 12:30:29,787 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse5 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse2 (= ~a25~0 1)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a19~0 0) .cse0 .cse1) (and .cse2 .cse1 .cse3) (and .cse4 .cse0 .cse1) (and .cse5 (<= 10 ~a28~0) .cse3 .cse1) (and .cse5 .cse4 .cse2 .cse0))) [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 12:30:29,788 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 12:30:29,789 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 12:30:29,789 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 12:30:29,789 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 12:30:29,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:30:29 BoogieIcfgContainer [2020-12-09 12:30:29,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:30:29,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:30:29,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:30:29,805 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:30:29,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:30:25" (3/4) ... [2020-12-09 12:30:29,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:30:29,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-12-09 12:30:29,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 12:30:29,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 12:30:29,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 12:30:29,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7f58db76-ca85-41a9-a0a1-fe0f586d6c11/bin/utaipan/witness.graphml [2020-12-09 12:30:29,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:30:29,918 INFO L168 Benchmark]: Toolchain (without parser) took 6078.14 ms. Allocated memory was 94.4 MB in the beginning and 220.2 MB in the end (delta: 125.8 MB). Free memory was 52.0 MB in the beginning and 131.1 MB in the end (delta: -79.1 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,918 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:30:29,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.86 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 94.4 MB. Free memory was 49.6 MB in the beginning and 44.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,919 INFO L168 Benchmark]: Boogie Preprocessor took 48.28 ms. Allocated memory is still 94.4 MB. Free memory was 44.1 MB in the beginning and 67.4 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,919 INFO L168 Benchmark]: RCFGBuilder took 1438.19 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 67.4 MB in the beginning and 106.5 MB in the end (delta: -39.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,919 INFO L168 Benchmark]: TraceAbstraction took 4059.62 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 145.8 MB in the end (delta: -39.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,920 INFO L168 Benchmark]: Witness Printer took 112.52 ms. Allocated memory is still 220.2 MB. Free memory was 145.8 MB in the beginning and 131.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:30:29,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.86 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 94.4 MB. Free memory was 49.6 MB in the beginning and 44.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.28 ms. Allocated memory is still 94.4 MB. Free memory was 44.1 MB in the beginning and 67.4 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1438.19 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 67.4 MB in the beginning and 106.5 MB in the end (delta: -39.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4059.62 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 145.8 MB in the end (delta: -39.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * Witness Printer took 112.52 ms. Allocated memory is still 220.2 MB. Free memory was 145.8 MB in the beginning and 131.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 479]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 10) && a17 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 10) && a17 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && 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: 3.8s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 634 SDtfs, 559 SDslu, 39 SDs, 0 SdLazy, 1850 SolverSat, 473 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 554 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1160 NumberOfCodeBlocks, 1160 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 427278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 471/487 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...