./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label39.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_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label39.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/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 b35ebac14d675485534a7c769439016d2f7efb28 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:11:40,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:11:40,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:11:40,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:11:40,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:11:40,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:11:40,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:11:40,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:11:40,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:11:40,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:11:40,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:11:40,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:11:40,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:11:40,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:11:40,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:11:40,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:11:40,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:11:40,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:11:40,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:11:40,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:11:40,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:11:40,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:11:40,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:11:40,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:11:40,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:11:40,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:11:40,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:11:40,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:11:40,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:11:40,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:11:40,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:11:40,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:11:40,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:11:40,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:11:40,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:11:40,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:11:40,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:11:40,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:11:40,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:11:40,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:11:40,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:11:40,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:11:40,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:11:40,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:11:40,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:11:40,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:11:40,274 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:11:40,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:11:40,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:11:40,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:11:40,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:11:40,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:11:40,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:11:40,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:11:40,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:11:40,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:11:40,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:11:40,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:11:40,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:11:40,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:11:40,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:11:40,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:11:40,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:11:40,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:11:40,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:11:40,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:11:40,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:11:40,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:11:40,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:11:40,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:11:40,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:11:40,280 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_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b35ebac14d675485534a7c769439016d2f7efb28 [2020-11-29 18:11:40,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:11:40,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:11:40,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:11:40,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:11:40,630 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:11:40,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2020-11-29 18:11:40,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/data/12d07ffb1/c5fc735908b8493fa1d08a6d6df427de/FLAGf9eb309b6 [2020-11-29 18:11:41,380 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:11:41,381 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2020-11-29 18:11:41,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/data/12d07ffb1/c5fc735908b8493fa1d08a6d6df427de/FLAGf9eb309b6 [2020-11-29 18:11:41,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/data/12d07ffb1/c5fc735908b8493fa1d08a6d6df427de [2020-11-29 18:11:41,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:11:41,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:11:41,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:11:41,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:11:41,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:11:41,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:11:41" (1/1) ... [2020-11-29 18:11:41,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7fb538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:41, skipping insertion in model container [2020-11-29 18:11:41,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:11:41" (1/1) ... [2020-11-29 18:11:41,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:11:41,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:11:42,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:11:42,153 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:11:42,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:11:42,279 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:11:42,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42 WrapperNode [2020-11-29 18:11:42,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:11:42,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:11:42,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:11:42,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:11:42,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:11:42,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:11:42,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:11:42,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:11:42,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... [2020-11-29 18:11:42,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:11:42,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:11:42,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:11:42,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:11:42,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/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 [2020-11-29 18:11:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:11:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:11:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:11:44,267 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:11:44,267 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 18:11:44,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:11:44 BoogieIcfgContainer [2020-11-29 18:11:44,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:11:44,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:11:44,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:11:44,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:11:44,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:11:41" (1/3) ... [2020-11-29 18:11:44,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f34c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:11:44, skipping insertion in model container [2020-11-29 18:11:44,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:42" (2/3) ... [2020-11-29 18:11:44,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f34c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:11:44, skipping insertion in model container [2020-11-29 18:11:44,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:11:44" (3/3) ... [2020-11-29 18:11:44,287 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-11-29 18:11:44,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:11:44,307 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:11:44,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:11:44,348 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:11:44,348 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:11:44,348 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:11:44,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:11:44,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:11:44,349 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:11:44,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:11:44,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:11:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-11-29 18:11:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-29 18:11:44,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:44,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:44,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2011925823, now seen corresponding path program 1 times [2020-11-29 18:11:44,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663438088] [2020-11-29 18:11:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:45,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663438088] [2020-11-29 18:11:45,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:45,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:45,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049868404] [2020-11-29 18:11:45,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:45,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:45,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:45,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:45,038 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-11-29 18:11:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:46,131 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-11-29 18:11:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:46,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-11-29 18:11:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:46,164 INFO L225 Difference]: With dead ends: 529 [2020-11-29 18:11:46,164 INFO L226 Difference]: Without dead ends: 266 [2020-11-29 18:11:46,169 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 [2020-11-29 18:11:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-29 18:11:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-29 18:11:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-29 18:11:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-11-29 18:11:46,281 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 132 [2020-11-29 18:11:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:46,283 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-11-29 18:11:46,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-11-29 18:11:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-29 18:11:46,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:46,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:46,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:11:46,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1746217319, now seen corresponding path program 1 times [2020-11-29 18:11:46,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:46,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106274739] [2020-11-29 18:11:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:46,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106274739] [2020-11-29 18:11:46,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:46,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:46,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869895622] [2020-11-29 18:11:46,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:46,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:46,460 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-11-29 18:11:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:47,270 INFO L93 Difference]: Finished difference Result 794 states and 1136 transitions. [2020-11-29 18:11:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:47,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-11-29 18:11:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:47,276 INFO L225 Difference]: With dead ends: 794 [2020-11-29 18:11:47,276 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 18:11:47,279 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 [2020-11-29 18:11:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 18:11:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2020-11-29 18:11:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-29 18:11:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 721 transitions. [2020-11-29 18:11:47,318 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 721 transitions. Word has length 137 [2020-11-29 18:11:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:47,318 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 721 transitions. [2020-11-29 18:11:47,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 721 transitions. [2020-11-29 18:11:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-29 18:11:47,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:47,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:47,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:11:47,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:47,325 INFO L82 PathProgramCache]: Analyzing trace with hash -194403057, now seen corresponding path program 1 times [2020-11-29 18:11:47,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:47,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127036594] [2020-11-29 18:11:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:47,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127036594] [2020-11-29 18:11:47,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:47,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:47,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680700335] [2020-11-29 18:11:47,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:47,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:47,495 INFO L87 Difference]: Start difference. First operand 528 states and 721 transitions. Second operand 3 states. [2020-11-29 18:11:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:48,432 INFO L93 Difference]: Finished difference Result 1578 states and 2158 transitions. [2020-11-29 18:11:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:48,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-11-29 18:11:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:48,447 INFO L225 Difference]: With dead ends: 1578 [2020-11-29 18:11:48,448 INFO L226 Difference]: Without dead ends: 1052 [2020-11-29 18:11:48,450 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 [2020-11-29 18:11:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-11-29 18:11:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-11-29 18:11:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-11-29 18:11:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1367 transitions. [2020-11-29 18:11:48,511 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1367 transitions. Word has length 141 [2020-11-29 18:11:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:48,512 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1367 transitions. [2020-11-29 18:11:48,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1367 transitions. [2020-11-29 18:11:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-29 18:11:48,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:48,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:48,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:11:48,519 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash 459769124, now seen corresponding path program 1 times [2020-11-29 18:11:48,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:48,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952263237] [2020-11-29 18:11:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:48,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952263237] [2020-11-29 18:11:48,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:48,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:11:48,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638165514] [2020-11-29 18:11:48,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:11:48,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:11:48,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:11:48,618 INFO L87 Difference]: Start difference. First operand 1052 states and 1367 transitions. Second operand 4 states. [2020-11-29 18:11:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:49,869 INFO L93 Difference]: Finished difference Result 2626 states and 3388 transitions. [2020-11-29 18:11:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:11:49,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-11-29 18:11:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:49,879 INFO L225 Difference]: With dead ends: 2626 [2020-11-29 18:11:49,879 INFO L226 Difference]: Without dead ends: 1576 [2020-11-29 18:11:49,881 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 [2020-11-29 18:11:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-11-29 18:11:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-11-29 18:11:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-11-29 18:11:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1659 transitions. [2020-11-29 18:11:49,927 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1659 transitions. Word has length 144 [2020-11-29 18:11:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:49,928 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1659 transitions. [2020-11-29 18:11:49,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:11:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1659 transitions. [2020-11-29 18:11:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 18:11:49,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:49,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:49,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:11:49,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 835327125, now seen corresponding path program 1 times [2020-11-29 18:11:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:49,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278086162] [2020-11-29 18:11:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:50,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278086162] [2020-11-29 18:11:50,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:50,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:11:50,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45553654] [2020-11-29 18:11:50,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:50,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:50,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:50,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:50,021 INFO L87 Difference]: Start difference. First operand 1314 states and 1659 transitions. Second operand 3 states. [2020-11-29 18:11:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:50,933 INFO L93 Difference]: Finished difference Result 3543 states and 4513 transitions. [2020-11-29 18:11:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:50,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-11-29 18:11:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:50,948 INFO L225 Difference]: With dead ends: 3543 [2020-11-29 18:11:50,948 INFO L226 Difference]: Without dead ends: 2231 [2020-11-29 18:11:50,950 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 [2020-11-29 18:11:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-11-29 18:11:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1838. [2020-11-29 18:11:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-11-29 18:11:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2353 transitions. [2020-11-29 18:11:51,014 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2353 transitions. Word has length 145 [2020-11-29 18:11:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:51,014 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2353 transitions. [2020-11-29 18:11:51,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2353 transitions. [2020-11-29 18:11:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 18:11:51,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:51,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:51,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:11:51,020 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1105249157, now seen corresponding path program 1 times [2020-11-29 18:11:51,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:51,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524267269] [2020-11-29 18:11:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:51,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524267269] [2020-11-29 18:11:51,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:51,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:51,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735473927] [2020-11-29 18:11:51,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:51,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:51,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:51,113 INFO L87 Difference]: Start difference. First operand 1838 states and 2353 transitions. Second operand 3 states. [2020-11-29 18:11:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:51,796 INFO L93 Difference]: Finished difference Result 4067 states and 5170 transitions. [2020-11-29 18:11:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:51,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-11-29 18:11:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:51,808 INFO L225 Difference]: With dead ends: 4067 [2020-11-29 18:11:51,809 INFO L226 Difference]: Without dead ends: 2231 [2020-11-29 18:11:51,811 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 [2020-11-29 18:11:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-11-29 18:11:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2020-11-29 18:11:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-11-29 18:11:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2765 transitions. [2020-11-29 18:11:51,876 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2765 transitions. Word has length 145 [2020-11-29 18:11:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:51,877 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2765 transitions. [2020-11-29 18:11:51,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2765 transitions. [2020-11-29 18:11:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-29 18:11:51,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:51,884 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:51,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:11:51,885 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1195577152, now seen corresponding path program 1 times [2020-11-29 18:11:51,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:51,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468400982] [2020-11-29 18:11:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:52,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468400982] [2020-11-29 18:11:52,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:52,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:52,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119284] [2020-11-29 18:11:52,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:52,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:52,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:52,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:52,003 INFO L87 Difference]: Start difference. First operand 2231 states and 2765 transitions. Second operand 3 states. [2020-11-29 18:11:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:52,699 INFO L93 Difference]: Finished difference Result 4591 states and 5677 transitions. [2020-11-29 18:11:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:52,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-11-29 18:11:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:52,713 INFO L225 Difference]: With dead ends: 4591 [2020-11-29 18:11:52,714 INFO L226 Difference]: Without dead ends: 2100 [2020-11-29 18:11:52,719 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 [2020-11-29 18:11:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-11-29 18:11:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2020-11-29 18:11:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-11-29 18:11:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2443 transitions. [2020-11-29 18:11:52,778 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2443 transitions. Word has length 147 [2020-11-29 18:11:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:52,781 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2443 transitions. [2020-11-29 18:11:52,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2443 transitions. [2020-11-29 18:11:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-29 18:11:52,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:52,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:52,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:11:52,788 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -221118453, now seen corresponding path program 1 times [2020-11-29 18:11:52,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:52,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918490192] [2020-11-29 18:11:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:11:52,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918490192] [2020-11-29 18:11:52,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:11:52,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:11:52,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922971050] [2020-11-29 18:11:52,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:52,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:52,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:11:52,920 INFO L87 Difference]: Start difference. First operand 2100 states and 2443 transitions. Second operand 3 states. [2020-11-29 18:11:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:53,580 INFO L93 Difference]: Finished difference Result 4329 states and 5030 transitions. [2020-11-29 18:11:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:53,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-11-29 18:11:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:53,593 INFO L225 Difference]: With dead ends: 4329 [2020-11-29 18:11:53,593 INFO L226 Difference]: Without dead ends: 2231 [2020-11-29 18:11:53,596 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 [2020-11-29 18:11:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-11-29 18:11:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2020-11-29 18:11:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-11-29 18:11:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2519 transitions. [2020-11-29 18:11:53,657 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2519 transitions. Word has length 149 [2020-11-29 18:11:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:53,657 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2519 transitions. [2020-11-29 18:11:53,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2519 transitions. [2020-11-29 18:11:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-29 18:11:53,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:53,663 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:53,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 18:11:53,663 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash -229563450, now seen corresponding path program 1 times [2020-11-29 18:11:53,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:53,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088138676] [2020-11-29 18:11:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:53,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088138676] [2020-11-29 18:11:53,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427766287] [2020-11-29 18:11:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/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 [2020-11-29 18:11:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:53,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:11:53,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:11:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:11:54,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:11:54,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 18:11:54,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056456626] [2020-11-29 18:11:54,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:54,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:54,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:54,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:54,217 INFO L87 Difference]: Start difference. First operand 2231 states and 2519 transitions. Second operand 3 states. [2020-11-29 18:11:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:54,998 INFO L93 Difference]: Finished difference Result 4984 states and 5612 transitions. [2020-11-29 18:11:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:54,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-11-29 18:11:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:55,015 INFO L225 Difference]: With dead ends: 4984 [2020-11-29 18:11:55,015 INFO L226 Difference]: Without dead ends: 2755 [2020-11-29 18:11:55,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-11-29 18:11:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2624. [2020-11-29 18:11:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2020-11-29 18:11:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 2905 transitions. [2020-11-29 18:11:55,082 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 2905 transitions. Word has length 151 [2020-11-29 18:11:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:55,082 INFO L481 AbstractCegarLoop]: Abstraction has 2624 states and 2905 transitions. [2020-11-29 18:11:55,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 2905 transitions. [2020-11-29 18:11:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-29 18:11:55,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:55,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:55,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 18:11:55,318 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1472999965, now seen corresponding path program 1 times [2020-11-29 18:11:55,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:55,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269746493] [2020-11-29 18:11:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269746493] [2020-11-29 18:11:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238651774] [2020-11-29 18:11:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:11:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:55,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:11:55,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:11:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:11:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:11:55,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 18:11:55,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742278373] [2020-11-29 18:11:55,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:55,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:55,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:55,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:55,644 INFO L87 Difference]: Start difference. First operand 2624 states and 2905 transitions. Second operand 3 states. [2020-11-29 18:11:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:56,398 INFO L93 Difference]: Finished difference Result 5770 states and 6421 transitions. [2020-11-29 18:11:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:56,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-11-29 18:11:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:56,415 INFO L225 Difference]: With dead ends: 5770 [2020-11-29 18:11:56,415 INFO L226 Difference]: Without dead ends: 3148 [2020-11-29 18:11:56,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2020-11-29 18:11:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3148. [2020-11-29 18:11:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-11-29 18:11:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 3468 transitions. [2020-11-29 18:11:56,512 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 3468 transitions. Word has length 165 [2020-11-29 18:11:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:56,513 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 3468 transitions. [2020-11-29 18:11:56,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 3468 transitions. [2020-11-29 18:11:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-11-29 18:11:56,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:56,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-11-29 18:11:56,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 18:11:56,735 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1687955795, now seen corresponding path program 1 times [2020-11-29 18:11:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:56,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100340749] [2020-11-29 18:11:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:11:56,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100340749] [2020-11-29 18:11:56,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931947961] [2020-11-29 18:11:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:11:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:56,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:11:56,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:11:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-29 18:11:57,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:11:57,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-11-29 18:11:57,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770613842] [2020-11-29 18:11:57,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:57,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:57,038 INFO L87 Difference]: Start difference. First operand 3148 states and 3468 transitions. Second operand 3 states. [2020-11-29 18:11:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:57,672 INFO L93 Difference]: Finished difference Result 7211 states and 7978 transitions. [2020-11-29 18:11:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:57,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-11-29 18:11:57,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:57,692 INFO L225 Difference]: With dead ends: 7211 [2020-11-29 18:11:57,693 INFO L226 Difference]: Without dead ends: 4065 [2020-11-29 18:11:57,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2020-11-29 18:11:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 3672. [2020-11-29 18:11:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-11-29 18:11:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4054 transitions. [2020-11-29 18:11:57,782 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4054 transitions. Word has length 168 [2020-11-29 18:11:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:57,783 INFO L481 AbstractCegarLoop]: Abstraction has 3672 states and 4054 transitions. [2020-11-29 18:11:57,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4054 transitions. [2020-11-29 18:11:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-29 18:11:57,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:11:57,792 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:11:58,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 18:11:58,018 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:11:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:11:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 768925884, now seen corresponding path program 1 times [2020-11-29 18:11:58,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:11:58,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924616274] [2020-11-29 18:11:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:11:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 18:11:58,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924616274] [2020-11-29 18:11:58,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816710912] [2020-11-29 18:11:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:11:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:11:58,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:11:58,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:11:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-29 18:11:58,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:11:58,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 18:11:58,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513684582] [2020-11-29 18:11:58,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:11:58,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:11:58,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:11:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:58,383 INFO L87 Difference]: Start difference. First operand 3672 states and 4054 transitions. Second operand 3 states. [2020-11-29 18:11:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:11:58,881 INFO L93 Difference]: Finished difference Result 7864 states and 8676 transitions. [2020-11-29 18:11:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:11:58,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-11-29 18:11:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:11:58,882 INFO L225 Difference]: With dead ends: 7864 [2020-11-29 18:11:58,882 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:11:58,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:11:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:11:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:11:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:11:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:11:58,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 195 [2020-11-29 18:11:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:11:58,891 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:11:58,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:11:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:11:58,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:11:59,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:11:59,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L432(line 432) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-29 18:11:59,388 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-29 18:11:59,389 INFO L274 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L435(line 435) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L402(line 402) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,390 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L438(line 438) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L405(line 405) no Hoare annotation was computed. [2020-11-29 18:11:59,391 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,392 INFO L274 CegarLoopResult]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L474(line 474) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L408(line 408) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-29 18:11:59,393 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L576(line 576) no Hoare annotation was computed. [2020-11-29 18:11:59,394 INFO L274 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L444(line 444) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L411(line 411) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,395 INFO L274 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L414(line 414) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-29 18:11:59,396 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,397 INFO L274 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,402 INFO L274 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,402 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-11-29 18:11:59,403 INFO L274 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-11-29 18:11:59,404 INFO L274 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-11-29 18:11:59,404 INFO L274 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-11-29 18:11:59,404 INFO L274 CegarLoopResult]: For program point L417(line 417) no Hoare annotation was computed. [2020-11-29 18:11:59,404 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-29 18:11:59,405 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-11-29 18:11:59,405 INFO L274 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-11-29 18:11:59,406 INFO L274 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L420(line 420) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-29 18:11:59,407 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,408 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L555(line 555) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L489(line 489) no Hoare annotation was computed. [2020-11-29 18:11:59,409 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L423(line 423) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,410 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L492(line 492) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-11-29 18:11:59,411 INFO L274 CegarLoopResult]: For program point L426(line 426) no Hoare annotation was computed. [2020-11-29 18:11:59,412 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-29 18:11:59,412 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-29 18:11:59,413 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-29 18:11:59,413 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-29 18:11:59,413 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,414 INFO L274 CegarLoopResult]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-29 18:11:59,415 INFO L274 CegarLoopResult]: For program point L462(line 462) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,416 INFO L274 CegarLoopResult]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 18:11:59,417 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-29 18:11:59,417 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-29 18:11:59,417 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-29 18:11:59,417 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-29 18:11:59,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:11:59 BoogieIcfgContainer [2020-11-29 18:11:59,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:11:59,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:11:59,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:11:59,444 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:11:59,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:11:44" (3/4) ... [2020-11-29 18:11:59,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:11:59,476 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 18:11:59,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:11:59,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:11:59,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:11:59,687 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d49085e2-bea6-4e2e-9dbb-5a2c7b471d6e/bin/uautomizer/witness.graphml [2020-11-29 18:11:59,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:11:59,689 INFO L168 Benchmark]: Toolchain (without parser) took 18083.77 ms. Allocated memory was 98.6 MB in the beginning and 337.6 MB in the end (delta: 239.1 MB). Free memory was 65.6 MB in the beginning and 256.0 MB in the end (delta: -190.3 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,690 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:11:59,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.39 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 59.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.34 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 53.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,691 INFO L168 Benchmark]: Boogie Preprocessor took 85.38 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 48.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,692 INFO L168 Benchmark]: RCFGBuilder took 1786.44 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 48.8 MB in the beginning and 98.4 MB in the end (delta: -49.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,692 INFO L168 Benchmark]: TraceAbstraction took 15168.18 ms. Allocated memory was 127.9 MB in the beginning and 337.6 MB in the end (delta: 209.7 MB). Free memory was 97.3 MB in the beginning and 270.6 MB in the end (delta: -173.4 MB). Peak memory consumption was 166.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,693 INFO L168 Benchmark]: Witness Printer took 242.90 ms. Allocated memory is still 337.6 MB. Free memory was 270.6 MB in the beginning and 256.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:11:59,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.39 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 59.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.34 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 53.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.38 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 48.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1786.44 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 48.8 MB in the beginning and 98.4 MB in the end (delta: -49.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15168.18 ms. Allocated memory was 127.9 MB in the beginning and 337.6 MB in the end (delta: 209.7 MB). Free memory was 97.3 MB in the beginning and 270.6 MB in the end (delta: -173.4 MB). Peak memory consumption was 166.2 MB. Max. memory is 16.1 GB. * Witness Printer took 242.90 ms. Allocated memory is still 337.6 MB. Free memory was 270.6 MB in the beginning and 256.0 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: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.7s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 734 SDtfs, 1170 SDslu, 66 SDs, 0 SdLazy, 4182 SolverSat, 737 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 705 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3672occurred in iteration=11, 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, 1181 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 73 NumberOfFragments, 57 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1946 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 2498 NumberOfCodeBlocks, 2498 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2482 ConstructedInterpolants, 0 QuantifiedInterpolants, 795288 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1279 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 457/469 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...