./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label29.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_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label29.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a846042d2e3a90f9afd312e363335049aaf47f7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:56:11,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:56:11,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:56:11,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:56:11,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:56:11,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:56:11,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:56:11,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:56:11,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:56:11,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:56:11,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:56:11,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:56:11,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:56:11,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:56:11,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:56:11,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:56:11,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:56:11,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:56:11,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:56:11,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:56:11,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:56:11,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:56:11,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:56:11,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:56:11,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:56:11,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:56:11,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:56:11,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:56:11,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:56:11,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:56:11,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:56:11,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:56:11,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:56:11,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:56:11,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:56:11,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:56:11,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:56:11,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:56:11,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:56:11,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:56:11,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:56:11,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:56:11,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:56:11,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:56:11,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:56:11,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:56:11,356 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:56:11,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:56:11,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:56:11,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:56:11,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:56:11,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:56:11,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:56:11,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:56:11,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:56:11,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:56:11,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:56:11,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:56:11,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:56:11,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:56:11,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:56:11,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:56:11,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:56:11,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:56:11,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:56:11,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:56:11,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:56:11,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:56:11,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:56:11,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:56:11,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:56:11,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a846042d2e3a90f9afd312e363335049aaf47f7 [2020-11-30 00:56:11,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:56:11,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:56:11,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:56:11,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:56:11,803 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:56:11,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2020-11-30 00:56:11,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/data/3df2d4651/e85dcc705ee94757acff003831df2a21/FLAG593a608c2 [2020-11-30 00:56:12,702 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:56:12,703 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2020-11-30 00:56:12,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/data/3df2d4651/e85dcc705ee94757acff003831df2a21/FLAG593a608c2 [2020-11-30 00:56:12,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/data/3df2d4651/e85dcc705ee94757acff003831df2a21 [2020-11-30 00:56:12,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:56:12,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:56:12,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:12,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:56:12,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:56:12,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:12" (1/1) ... [2020-11-30 00:56:12,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560a43a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:12, skipping insertion in model container [2020-11-30 00:56:12,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:12" (1/1) ... [2020-11-30 00:56:12,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:56:13,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:56:13,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:13,479 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:56:13,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:13,676 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:56:13,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13 WrapperNode [2020-11-30 00:56:13,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:13,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:56:13,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:56:13,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:56:13,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:56:13,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:56:13,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:56:13,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:56:13,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... [2020-11-30 00:56:13,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:56:13,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:56:13,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:56:13,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:56:13,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/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 [2020-11-30 00:56:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:56:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:56:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:56:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:56:16,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:56:16,110 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:56:16,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:16 BoogieIcfgContainer [2020-11-30 00:56:16,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:56:16,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:56:16,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:56:16,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:56:16,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:56:12" (1/3) ... [2020-11-30 00:56:16,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbe597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:16, skipping insertion in model container [2020-11-30 00:56:16,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:13" (2/3) ... [2020-11-30 00:56:16,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbe597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:16, skipping insertion in model container [2020-11-30 00:56:16,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:16" (3/3) ... [2020-11-30 00:56:16,125 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label29.c [2020-11-30 00:56:16,141 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:56:16,147 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:56:16,163 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:56:16,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:56:16,210 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:56:16,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:56:16,210 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:56:16,210 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:56:16,210 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:56:16,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:56:16,210 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:56:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-11-30 00:56:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-30 00:56:16,246 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:16,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:16,248 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:16,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 620620582, now seen corresponding path program 1 times [2020-11-30 00:56:16,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:16,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770672643] [2020-11-30 00:56:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770672643] [2020-11-30 00:56:16,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:16,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:16,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773899905] [2020-11-30 00:56:16,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:16,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:16,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:16,905 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-11-30 00:56:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:18,280 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-11-30 00:56:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:18,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-11-30 00:56:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:18,311 INFO L225 Difference]: With dead ends: 529 [2020-11-30 00:56:18,315 INFO L226 Difference]: Without dead ends: 266 [2020-11-30 00:56:18,326 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 [2020-11-30 00:56:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-30 00:56:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-30 00:56:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-30 00:56:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 386 transitions. [2020-11-30 00:56:18,434 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 386 transitions. Word has length 101 [2020-11-30 00:56:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:18,435 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 386 transitions. [2020-11-30 00:56:18,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 386 transitions. [2020-11-30 00:56:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 00:56:18,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:18,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:18,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:56:18,449 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:18,453 INFO L82 PathProgramCache]: Analyzing trace with hash -839721423, now seen corresponding path program 1 times [2020-11-30 00:56:18,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653610263] [2020-11-30 00:56:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:18,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653610263] [2020-11-30 00:56:18,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:18,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:18,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180154616] [2020-11-30 00:56:18,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:18,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:18,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:18,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:18,604 INFO L87 Difference]: Start difference. First operand 266 states and 386 transitions. Second operand 3 states. [2020-11-30 00:56:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:19,432 INFO L93 Difference]: Finished difference Result 792 states and 1153 transitions. [2020-11-30 00:56:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:19,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 00:56:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:19,444 INFO L225 Difference]: With dead ends: 792 [2020-11-30 00:56:19,446 INFO L226 Difference]: Without dead ends: 528 [2020-11-30 00:56:19,449 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 [2020-11-30 00:56:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-11-30 00:56:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2020-11-30 00:56:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-30 00:56:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 726 transitions. [2020-11-30 00:56:19,506 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 726 transitions. Word has length 107 [2020-11-30 00:56:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:19,508 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 726 transitions. [2020-11-30 00:56:19,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 726 transitions. [2020-11-30 00:56:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-30 00:56:19,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:19,518 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:19,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:56:19,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash 356361780, now seen corresponding path program 1 times [2020-11-30 00:56:19,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:19,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301423377] [2020-11-30 00:56:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:19,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301423377] [2020-11-30 00:56:19,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:19,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:19,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298299611] [2020-11-30 00:56:19,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:19,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:19,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:19,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:19,652 INFO L87 Difference]: Start difference. First operand 528 states and 726 transitions. Second operand 3 states. [2020-11-30 00:56:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:20,455 INFO L93 Difference]: Finished difference Result 1578 states and 2173 transitions. [2020-11-30 00:56:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:20,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-30 00:56:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:20,464 INFO L225 Difference]: With dead ends: 1578 [2020-11-30 00:56:20,464 INFO L226 Difference]: Without dead ends: 1052 [2020-11-30 00:56:20,466 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 [2020-11-30 00:56:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-11-30 00:56:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-11-30 00:56:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-11-30 00:56:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1376 transitions. [2020-11-30 00:56:20,555 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1376 transitions. Word has length 122 [2020-11-30 00:56:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:20,556 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1376 transitions. [2020-11-30 00:56:20,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1376 transitions. [2020-11-30 00:56:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-30 00:56:20,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:20,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:20,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:56:20,564 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -799468791, now seen corresponding path program 1 times [2020-11-30 00:56:20,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:20,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154078718] [2020-11-30 00:56:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 00:56:20,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154078718] [2020-11-30 00:56:20,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:20,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:20,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041701170] [2020-11-30 00:56:20,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:20,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:20,684 INFO L87 Difference]: Start difference. First operand 1052 states and 1376 transitions. Second operand 3 states. [2020-11-30 00:56:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:21,527 INFO L93 Difference]: Finished difference Result 2495 states and 3288 transitions. [2020-11-30 00:56:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:21,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-30 00:56:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:21,538 INFO L225 Difference]: With dead ends: 2495 [2020-11-30 00:56:21,539 INFO L226 Difference]: Without dead ends: 1445 [2020-11-30 00:56:21,544 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 [2020-11-30 00:56:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-11-30 00:56:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1445. [2020-11-30 00:56:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-11-30 00:56:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1842 transitions. [2020-11-30 00:56:21,598 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1842 transitions. Word has length 129 [2020-11-30 00:56:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:21,600 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 1842 transitions. [2020-11-30 00:56:21,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1842 transitions. [2020-11-30 00:56:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-30 00:56:21,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:21,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:21,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:56:21,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash 12485887, now seen corresponding path program 1 times [2020-11-30 00:56:21,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:21,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715100530] [2020-11-30 00:56:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-30 00:56:21,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715100530] [2020-11-30 00:56:21,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:21,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:21,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137496714] [2020-11-30 00:56:21,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:21,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:21,740 INFO L87 Difference]: Start difference. First operand 1445 states and 1842 transitions. Second operand 3 states. [2020-11-30 00:56:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:22,444 INFO L93 Difference]: Finished difference Result 2888 states and 3682 transitions. [2020-11-30 00:56:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:22,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-30 00:56:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:22,455 INFO L225 Difference]: With dead ends: 2888 [2020-11-30 00:56:22,455 INFO L226 Difference]: Without dead ends: 1445 [2020-11-30 00:56:22,457 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 [2020-11-30 00:56:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-11-30 00:56:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1445. [2020-11-30 00:56:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-11-30 00:56:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1818 transitions. [2020-11-30 00:56:22,517 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1818 transitions. Word has length 133 [2020-11-30 00:56:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:22,518 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 1818 transitions. [2020-11-30 00:56:22,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1818 transitions. [2020-11-30 00:56:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-30 00:56:22,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:22,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:22,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:56:22,525 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:22,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2109706154, now seen corresponding path program 1 times [2020-11-30 00:56:22,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:22,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190140925] [2020-11-30 00:56:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 00:56:22,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190140925] [2020-11-30 00:56:22,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:22,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:22,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581979618] [2020-11-30 00:56:22,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:22,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:22,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:22,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:22,625 INFO L87 Difference]: Start difference. First operand 1445 states and 1818 transitions. Second operand 3 states. [2020-11-30 00:56:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:23,375 INFO L93 Difference]: Finished difference Result 3543 states and 4434 transitions. [2020-11-30 00:56:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:23,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-30 00:56:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:23,394 INFO L225 Difference]: With dead ends: 3543 [2020-11-30 00:56:23,395 INFO L226 Difference]: Without dead ends: 1707 [2020-11-30 00:56:23,398 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 [2020-11-30 00:56:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-11-30 00:56:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1314. [2020-11-30 00:56:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-11-30 00:56:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1463 transitions. [2020-11-30 00:56:23,456 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1463 transitions. Word has length 134 [2020-11-30 00:56:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:23,461 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1463 transitions. [2020-11-30 00:56:23,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1463 transitions. [2020-11-30 00:56:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 00:56:23,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:23,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:23,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:56:23,467 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:23,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1282529925, now seen corresponding path program 1 times [2020-11-30 00:56:23,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:23,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324600386] [2020-11-30 00:56:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-30 00:56:23,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324600386] [2020-11-30 00:56:23,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:23,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:23,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067442464] [2020-11-30 00:56:23,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:56:23,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:23,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:56:23,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:23,592 INFO L87 Difference]: Start difference. First operand 1314 states and 1463 transitions. Second operand 4 states. [2020-11-30 00:56:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:24,566 INFO L93 Difference]: Finished difference Result 3543 states and 3972 transitions. [2020-11-30 00:56:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:56:24,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-11-30 00:56:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:24,582 INFO L225 Difference]: With dead ends: 3543 [2020-11-30 00:56:24,582 INFO L226 Difference]: Without dead ends: 2231 [2020-11-30 00:56:24,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-11-30 00:56:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1576. [2020-11-30 00:56:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-11-30 00:56:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1749 transitions. [2020-11-30 00:56:24,645 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1749 transitions. Word has length 137 [2020-11-30 00:56:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:24,645 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 1749 transitions. [2020-11-30 00:56:24,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:56:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1749 transitions. [2020-11-30 00:56:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-30 00:56:24,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:24,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:24,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:56:24,651 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:24,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2102335383, now seen corresponding path program 1 times [2020-11-30 00:56:24,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:24,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674228777] [2020-11-30 00:56:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 00:56:24,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674228777] [2020-11-30 00:56:24,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:24,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:24,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597549327] [2020-11-30 00:56:24,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:24,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:24,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:24,750 INFO L87 Difference]: Start difference. First operand 1576 states and 1749 transitions. Second operand 3 states. [2020-11-30 00:56:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:25,497 INFO L93 Difference]: Finished difference Result 4067 states and 4514 transitions. [2020-11-30 00:56:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:25,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-11-30 00:56:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:25,510 INFO L225 Difference]: With dead ends: 4067 [2020-11-30 00:56:25,510 INFO L226 Difference]: Without dead ends: 2493 [2020-11-30 00:56:25,513 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 [2020-11-30 00:56:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-11-30 00:56:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2100. [2020-11-30 00:56:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-11-30 00:56:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2333 transitions. [2020-11-30 00:56:25,575 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2333 transitions. Word has length 146 [2020-11-30 00:56:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:25,575 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2333 transitions. [2020-11-30 00:56:25,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2333 transitions. [2020-11-30 00:56:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-30 00:56:25,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:25,582 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:25,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:56:25,582 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1795966815, now seen corresponding path program 1 times [2020-11-30 00:56:25,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:25,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773301768] [2020-11-30 00:56:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 00:56:25,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773301768] [2020-11-30 00:56:25,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:25,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:56:25,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607901733] [2020-11-30 00:56:25,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:25,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:25,715 INFO L87 Difference]: Start difference. First operand 2100 states and 2333 transitions. Second operand 3 states. [2020-11-30 00:56:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:26,430 INFO L93 Difference]: Finished difference Result 4460 states and 4954 transitions. [2020-11-30 00:56:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:26,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-11-30 00:56:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:26,445 INFO L225 Difference]: With dead ends: 4460 [2020-11-30 00:56:26,446 INFO L226 Difference]: Without dead ends: 2362 [2020-11-30 00:56:26,450 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 [2020-11-30 00:56:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-11-30 00:56:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2020-11-30 00:56:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2020-11-30 00:56:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2613 transitions. [2020-11-30 00:56:26,514 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2613 transitions. Word has length 162 [2020-11-30 00:56:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:26,515 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 2613 transitions. [2020-11-30 00:56:26,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2613 transitions. [2020-11-30 00:56:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-30 00:56:26,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:26,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:56:26,522 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash -646031141, now seen corresponding path program 1 times [2020-11-30 00:56:26,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:26,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281045021] [2020-11-30 00:56:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 00:56:26,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281045021] [2020-11-30 00:56:26,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:26,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:26,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664400187] [2020-11-30 00:56:26,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:56:26,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:26,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:56:26,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:26,661 INFO L87 Difference]: Start difference. First operand 2362 states and 2613 transitions. Second operand 4 states. [2020-11-30 00:56:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:27,733 INFO L93 Difference]: Finished difference Result 5377 states and 5940 transitions. [2020-11-30 00:56:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:56:27,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-11-30 00:56:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:27,753 INFO L225 Difference]: With dead ends: 5377 [2020-11-30 00:56:27,753 INFO L226 Difference]: Without dead ends: 3017 [2020-11-30 00:56:27,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-11-30 00:56:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2020-11-30 00:56:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-11-30 00:56:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3023 transitions. [2020-11-30 00:56:27,837 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3023 transitions. Word has length 166 [2020-11-30 00:56:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:27,838 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3023 transitions. [2020-11-30 00:56:27,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:56:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3023 transitions. [2020-11-30 00:56:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-30 00:56:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:27,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:27,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:56:27,846 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash -87724684, now seen corresponding path program 1 times [2020-11-30 00:56:27,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:27,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968107999] [2020-11-30 00:56:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-30 00:56:28,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968107999] [2020-11-30 00:56:28,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:28,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:28,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063370898] [2020-11-30 00:56:28,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:28,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:56:28,029 INFO L87 Difference]: Start difference. First operand 2755 states and 3023 transitions. Second operand 3 states. [2020-11-30 00:56:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:28,620 INFO L93 Difference]: Finished difference Result 6032 states and 6628 transitions. [2020-11-30 00:56:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:28,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-11-30 00:56:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:28,642 INFO L225 Difference]: With dead ends: 6032 [2020-11-30 00:56:28,642 INFO L226 Difference]: Without dead ends: 3148 [2020-11-30 00:56:28,648 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 [2020-11-30 00:56:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2020-11-30 00:56:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 1838. [2020-11-30 00:56:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-11-30 00:56:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2027 transitions. [2020-11-30 00:56:28,714 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2027 transitions. Word has length 183 [2020-11-30 00:56:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:28,715 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2027 transitions. [2020-11-30 00:56:28,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2027 transitions. [2020-11-30 00:56:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-11-30 00:56:28,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:28,726 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:28,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:56:28,727 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:56:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash 736506349, now seen corresponding path program 1 times [2020-11-30 00:56:28,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:28,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737194371] [2020-11-30 00:56:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 129 proven. 142 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 00:56:29,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737194371] [2020-11-30 00:56:29,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671805516] [2020-11-30 00:56:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/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 [2020-11-30 00:56:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:29,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:56:29,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:56:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:56:29,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:56:29,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-11-30 00:56:29,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436115795] [2020-11-30 00:56:29,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:56:29,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:56:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:56:29,795 INFO L87 Difference]: Start difference. First operand 1838 states and 2027 transitions. Second operand 3 states. [2020-11-30 00:56:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:30,632 INFO L93 Difference]: Finished difference Result 3803 states and 4203 transitions. [2020-11-30 00:56:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:56:30,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2020-11-30 00:56:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:30,634 INFO L225 Difference]: With dead ends: 3803 [2020-11-30 00:56:30,634 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:56:30,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:56:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:56:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:56:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:56:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:56:30,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 248 [2020-11-30 00:56:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:30,641 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:56:30,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:56:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:56:30,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:56:30,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 00:56:30,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:56:31,190 INFO L274 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L432(line 432) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 00:56:31,191 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,192 INFO L274 CegarLoopResult]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,193 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 00:56:31,193 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 00:56:31,193 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-11-30 00:56:31,194 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-30 00:56:31,194 INFO L274 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-11-30 00:56:31,194 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-30 00:56:31,194 INFO L274 CegarLoopResult]: For program point L435(line 435) no Hoare annotation was computed. [2020-11-30 00:56:31,195 INFO L274 CegarLoopResult]: For program point L402(line 402) no Hoare annotation was computed. [2020-11-30 00:56:31,195 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 00:56:31,195 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 00:56:31,196 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 00:56:31,198 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 00:56:31,198 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 00:56:31,199 INFO L274 CegarLoopResult]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,200 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 00:56:31,200 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 00:56:31,200 INFO L274 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-11-30 00:56:31,200 INFO L274 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-11-30 00:56:31,200 INFO L274 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-11-30 00:56:31,201 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-30 00:56:31,201 INFO L274 CegarLoopResult]: For program point L438(line 438) no Hoare annotation was computed. [2020-11-30 00:56:31,202 INFO L274 CegarLoopResult]: For program point L405(line 405) no Hoare annotation was computed. [2020-11-30 00:56:31,202 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 00:56:31,203 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 00:56:31,203 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 00:56:31,203 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 00:56:31,203 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 00:56:31,203 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 00:56:31,204 INFO L274 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,204 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,204 INFO L274 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,204 INFO L274 CegarLoopResult]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,204 INFO L274 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,205 INFO L274 CegarLoopResult]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,205 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 00:56:31,205 INFO L274 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-11-30 00:56:31,205 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-30 00:56:31,205 INFO L274 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2020-11-30 00:56:31,206 INFO L274 CegarLoopResult]: For program point L474(line 474) no Hoare annotation was computed. [2020-11-30 00:56:31,206 INFO L274 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-11-30 00:56:31,206 INFO L274 CegarLoopResult]: For program point L408(line 408) no Hoare annotation was computed. [2020-11-30 00:56:31,206 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 00:56:31,206 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 00:56:31,207 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 00:56:31,207 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:56:31,207 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 00:56:31,207 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 00:56:31,207 INFO L274 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,208 INFO L274 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,208 INFO L274 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,208 INFO L274 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,208 INFO L274 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,208 INFO L274 CegarLoopResult]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,209 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 00:56:31,209 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 00:56:31,209 INFO L274 CegarLoopResult]: For program point L576(line 576) no Hoare annotation was computed. [2020-11-30 00:56:31,209 INFO L274 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-11-30 00:56:31,209 INFO L274 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L444(line 444) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L411(line 411) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 00:56:31,210 INFO L274 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,211 INFO L274 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,211 INFO L274 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,211 INFO L274 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,211 INFO L274 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,211 INFO L274 CegarLoopResult]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,213 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 00:56:31,213 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 00:56:31,213 INFO L274 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-11-30 00:56:31,213 INFO L274 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-11-30 00:56:31,214 INFO L274 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2020-11-30 00:56:31,214 INFO L274 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-11-30 00:56:31,214 INFO L274 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-11-30 00:56:31,214 INFO L274 CegarLoopResult]: For program point L414(line 414) no Hoare annotation was computed. [2020-11-30 00:56:31,214 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 00:56:31,215 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 00:56:31,215 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 00:56:31,215 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 00:56:31,215 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 00:56:31,215 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 00:56:31,216 INFO L274 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-11-30 00:56:31,216 INFO L274 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,216 INFO L274 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,216 INFO L274 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,216 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,217 INFO L274 CegarLoopResult]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:56:31,217 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 00:56:31,217 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 00:56:31,217 INFO L274 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-11-30 00:56:31,218 INFO L274 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-11-30 00:56:31,218 INFO L274 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-11-30 00:56:31,218 INFO L274 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-11-30 00:56:31,218 INFO L274 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-11-30 00:56:31,218 INFO L274 CegarLoopResult]: For program point L417(line 417) no Hoare annotation was computed. [2020-11-30 00:56:31,219 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 00:56:31,221 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (and .cse0 (<= ~a17~0 0)) (and .cse0 (not (= ~a7~0 1)) (= ~a17~0 1)) (<= ~a8~0 13))) [2020-11-30 00:56:31,221 INFO L274 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,221 INFO L274 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,222 INFO L274 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,222 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,222 INFO L274 CegarLoopResult]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,222 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 00:56:31,222 INFO L274 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-11-30 00:56:31,223 INFO L274 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-11-30 00:56:31,223 INFO L274 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-11-30 00:56:31,223 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-30 00:56:31,223 INFO L274 CegarLoopResult]: For program point L420(line 420) no Hoare annotation was computed. [2020-11-30 00:56:31,223 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 00:56:31,224 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 00:56:31,224 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 00:56:31,224 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 00:56:31,224 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 00:56:31,224 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 00:56:31,225 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:56:31,225 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 00:56:31,225 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 00:56:31,225 INFO L274 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,225 INFO L274 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,226 INFO L274 CegarLoopResult]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,226 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,226 INFO L274 CegarLoopResult]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,226 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 00:56:31,226 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 00:56:31,227 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 00:56:31,227 INFO L274 CegarLoopResult]: For program point L555(line 555) no Hoare annotation was computed. [2020-11-30 00:56:31,227 INFO L274 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-11-30 00:56:31,227 INFO L274 CegarLoopResult]: For program point L489(line 489) no Hoare annotation was computed. [2020-11-30 00:56:31,227 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point L423(line 423) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,228 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,229 INFO L274 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,229 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 00:56:31,229 INFO L274 CegarLoopResult]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,229 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 00:56:31,229 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 00:56:31,230 INFO L274 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-11-30 00:56:31,230 INFO L274 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-11-30 00:56:31,230 INFO L274 CegarLoopResult]: For program point L492(line 492) no Hoare annotation was computed. [2020-11-30 00:56:31,230 INFO L274 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-11-30 00:56:31,230 INFO L274 CegarLoopResult]: For program point L426(line 426) no Hoare annotation was computed. [2020-11-30 00:56:31,231 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 00:56:31,231 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 00:56:31,231 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 00:56:31,231 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 00:56:31,231 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 00:56:31,232 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 00:56:31,232 INFO L274 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,233 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (and .cse0 (<= ~a17~0 0)) (and .cse0 (not (= ~a7~0 1)) (= ~a17~0 1)) (<= ~a8~0 13))) [2020-11-30 00:56:31,233 INFO L274 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,234 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,234 INFO L274 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,234 INFO L274 CegarLoopResult]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,234 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 00:56:31,234 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:56:31,235 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:56:31,235 INFO L274 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-11-30 00:56:31,235 INFO L274 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-11-30 00:56:31,235 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-30 00:56:31,235 INFO L274 CegarLoopResult]: For program point L462(line 462) no Hoare annotation was computed. [2020-11-30 00:56:31,236 INFO L274 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-11-30 00:56:31,236 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 00:56:31,236 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 00:56:31,236 INFO L274 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 00:56:31,237 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 00:56:31,238 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 00:56:31,238 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 00:56:31,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:56:31 BoogieIcfgContainer [2020-11-30 00:56:31,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:56:31,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:56:31,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:56:31,276 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:56:31,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:16" (3/4) ... [2020-11-30 00:56:31,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:56:31,319 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 00:56:31,321 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:56:31,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:56:31,324 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:56:31,518 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c9b42cd6-6ff3-44ee-9aec-896b2e0e9f51/bin/uautomizer/witness.graphml [2020-11-30 00:56:31,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:56:31,520 INFO L168 Benchmark]: Toolchain (without parser) took 18589.32 ms. Allocated memory was 123.7 MB in the beginning and 350.2 MB in the end (delta: 226.5 MB). Free memory was 96.3 MB in the beginning and 242.2 MB in the end (delta: -145.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,521 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:31,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.42 ms. Allocated memory is still 123.7 MB. Free memory was 96.0 MB in the beginning and 83.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.10 ms. Allocated memory is still 123.7 MB. Free memory was 83.6 MB in the beginning and 77.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,522 INFO L168 Benchmark]: Boogie Preprocessor took 139.90 ms. Allocated memory is still 123.7 MB. Free memory was 77.9 MB in the beginning and 73.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,522 INFO L168 Benchmark]: RCFGBuilder took 2168.35 ms. Allocated memory was 123.7 MB in the beginning and 163.6 MB in the end (delta: 39.8 MB). Free memory was 73.3 MB in the beginning and 132.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,523 INFO L168 Benchmark]: TraceAbstraction took 15158.91 ms. Allocated memory was 163.6 MB in the beginning and 350.2 MB in the end (delta: 186.6 MB). Free memory was 131.4 MB in the beginning and 256.8 MB in the end (delta: -125.5 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,523 INFO L168 Benchmark]: Witness Printer took 243.82 ms. Allocated memory is still 350.2 MB. Free memory was 256.8 MB in the beginning and 242.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:31,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 745.42 ms. Allocated memory is still 123.7 MB. Free memory was 96.0 MB in the beginning and 83.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 124.10 ms. Allocated memory is still 123.7 MB. Free memory was 83.6 MB in the beginning and 77.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.90 ms. Allocated memory is still 123.7 MB. Free memory was 77.9 MB in the beginning and 73.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2168.35 ms. Allocated memory was 123.7 MB in the beginning and 163.6 MB in the end (delta: 39.8 MB). Free memory was 73.3 MB in the beginning and 132.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15158.91 ms. Allocated memory was 163.6 MB in the beginning and 350.2 MB in the end (delta: 186.6 MB). Free memory was 131.4 MB in the beginning and 256.8 MB in the end (delta: -125.5 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. * Witness Printer took 243.82 ms. Allocated memory is still 350.2 MB. Free memory was 256.8 MB in the beginning and 242.2 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a21 == 1 && a17 <= 0) || ((a21 == 1 && !(a7 == 1)) && a17 == 1)) || a8 <= 13 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((a21 == 1 && a17 <= 0) || ((a21 == 1 && !(a7 == 1)) && a17 == 1)) || a8 <= 13 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 668 SDtfs, 1908 SDslu, 70 SDs, 0 SdLazy, 4169 SolverSat, 647 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2755occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 3013 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3000 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 2016 NumberOfCodeBlocks, 2016 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2003 ConstructedInterpolants, 0 QuantifiedInterpolants, 1132709 SizeOfPredicates, 1 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1086/1228 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...