./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem01_label40.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d094e42df8541752d78f0af0edf4249146a918f5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:44:48,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:44:48,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:44:48,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:44:48,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:44:48,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:44:48,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:44:48,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:44:48,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:44:48,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:44:48,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:44:48,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:44:48,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:44:48,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:44:48,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:44:48,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:44:48,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:44:48,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:44:48,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:44:48,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:44:48,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:44:48,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:44:48,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:44:48,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:44:48,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:44:48,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:44:48,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:44:48,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:44:48,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:44:48,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:44:48,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:44:48,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:44:48,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:44:48,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:44:48,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:44:48,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:44:48,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:44:48,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:44:48,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:44:48,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:44:48,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:44:48,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:44:48,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:44:48,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:44:48,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:44:48,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:44:48,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:44:48,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:44:48,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:44:48,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:44:48,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:44:48,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:44:48,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:44:48,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:44:48,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:44:48,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:44:48,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:44:48,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:44:48,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:44:48,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:44:48,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:44:48,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:44:48,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:44:48,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:44:48,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:44:48,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:44:48,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:44:48,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:44:48,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:44:48,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:44:48,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:44:48,360 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d094e42df8541752d78f0af0edf4249146a918f5 [2020-10-25 19:44:48,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:44:48,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:44:48,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:44:48,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:44:48,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:44:48,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-10-25 19:44:48,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b33448a2/5247cd28180d4ea7980097a8f21bef2a/FLAGb4dae26dd [2020-10-25 19:44:49,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:44:49,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-10-25 19:44:49,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b33448a2/5247cd28180d4ea7980097a8f21bef2a/FLAGb4dae26dd [2020-10-25 19:44:49,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b33448a2/5247cd28180d4ea7980097a8f21bef2a [2020-10-25 19:44:49,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:44:49,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:44:49,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:44:49,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:44:49,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:44:49,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:44:49" (1/1) ... [2020-10-25 19:44:49,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56859188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:49, skipping insertion in model container [2020-10-25 19:44:49,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:44:49" (1/1) ... [2020-10-25 19:44:49,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:44:50,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:44:50,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:44:50,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:44:50,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:44:50,656 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:44:50,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50 WrapperNode [2020-10-25 19:44:50,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:44:50,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:44:50,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:44:50,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:44:50,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:44:50,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:44:50,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:44:50,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:44:50,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... [2020-10-25 19:44:50,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:44:50,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:44:50,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:44:50,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:44:50,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:44:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:44:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:44:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:44:50,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:44:52,722 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:44:52,723 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 19:44:52,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:52 BoogieIcfgContainer [2020-10-25 19:44:52,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:44:52,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:44:52,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:44:52,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:44:52,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:44:49" (1/3) ... [2020-10-25 19:44:52,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa9c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:44:52, skipping insertion in model container [2020-10-25 19:44:52,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:50" (2/3) ... [2020-10-25 19:44:52,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa9c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:44:52, skipping insertion in model container [2020-10-25 19:44:52,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:52" (3/3) ... [2020-10-25 19:44:52,739 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2020-10-25 19:44:52,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:44:52,763 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:44:52,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:44:52,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:44:52,820 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:44:52,820 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:44:52,820 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:44:52,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:44:52,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:44:52,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:44:52,821 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:44:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-10-25 19:44:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-25 19:44:52,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:52,852 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] [2020-10-25 19:44:52,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash 304749070, now seen corresponding path program 1 times [2020-10-25 19:44:52,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:52,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092255475] [2020-10-25 19:44:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:53,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092255475] [2020-10-25 19:44:53,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:53,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:53,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086492105] [2020-10-25 19:44:53,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:53,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:53,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:53,393 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-10-25 19:44:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:54,714 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-10-25 19:44:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:54,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-10-25 19:44:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:54,733 INFO L225 Difference]: With dead ends: 529 [2020-10-25 19:44:54,733 INFO L226 Difference]: Without dead ends: 266 [2020-10-25 19:44:54,738 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 [2020-10-25 19:44:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-25 19:44:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-25 19:44:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-25 19:44:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-10-25 19:44:54,805 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 87 [2020-10-25 19:44:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:54,807 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-10-25 19:44:54,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-10-25 19:44:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-25 19:44:54,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:54,815 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] [2020-10-25 19:44:54,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:44:54,816 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:54,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1973927540, now seen corresponding path program 1 times [2020-10-25 19:44:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:54,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221556748] [2020-10-25 19:44:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:54,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221556748] [2020-10-25 19:44:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:54,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:54,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108166785] [2020-10-25 19:44:54,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:54,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:54,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:54,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:54,960 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-10-25 19:44:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:55,693 INFO L93 Difference]: Finished difference Result 794 states and 1136 transitions. [2020-10-25 19:44:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:55,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-10-25 19:44:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:55,705 INFO L225 Difference]: With dead ends: 794 [2020-10-25 19:44:55,705 INFO L226 Difference]: Without dead ends: 530 [2020-10-25 19:44:55,710 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 [2020-10-25 19:44:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-25 19:44:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2020-10-25 19:44:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-25 19:44:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 721 transitions. [2020-10-25 19:44:55,782 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 721 transitions. Word has length 92 [2020-10-25 19:44:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:55,783 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 721 transitions. [2020-10-25 19:44:55,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 721 transitions. [2020-10-25 19:44:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-25 19:44:55,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:55,794 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] [2020-10-25 19:44:55,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:44:55,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1082765250, now seen corresponding path program 1 times [2020-10-25 19:44:55,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:55,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646268740] [2020-10-25 19:44:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:55,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646268740] [2020-10-25 19:44:55,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:55,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:55,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926777386] [2020-10-25 19:44:55,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:55,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:55,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:55,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:55,954 INFO L87 Difference]: Start difference. First operand 528 states and 721 transitions. Second operand 3 states. [2020-10-25 19:44:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:56,751 INFO L93 Difference]: Finished difference Result 1578 states and 2158 transitions. [2020-10-25 19:44:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:56,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-10-25 19:44:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:56,760 INFO L225 Difference]: With dead ends: 1578 [2020-10-25 19:44:56,760 INFO L226 Difference]: Without dead ends: 1052 [2020-10-25 19:44:56,762 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 [2020-10-25 19:44:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-25 19:44:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-10-25 19:44:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-25 19:44:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1367 transitions. [2020-10-25 19:44:56,821 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1367 transitions. Word has length 96 [2020-10-25 19:44:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:56,822 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1367 transitions. [2020-10-25 19:44:56,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1367 transitions. [2020-10-25 19:44:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-25 19:44:56,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:56,826 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] [2020-10-25 19:44:56,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:44:56,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1253646839, now seen corresponding path program 1 times [2020-10-25 19:44:56,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:56,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126988426] [2020-10-25 19:44:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:56,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126988426] [2020-10-25 19:44:56,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:56,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:44:56,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083484] [2020-10-25 19:44:56,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:44:56,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:44:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:44:56,904 INFO L87 Difference]: Start difference. First operand 1052 states and 1367 transitions. Second operand 4 states. [2020-10-25 19:44:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:58,108 INFO L93 Difference]: Finished difference Result 2626 states and 3388 transitions. [2020-10-25 19:44:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:44:58,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-25 19:44:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:58,120 INFO L225 Difference]: With dead ends: 2626 [2020-10-25 19:44:58,121 INFO L226 Difference]: Without dead ends: 1576 [2020-10-25 19:44:58,123 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 [2020-10-25 19:44:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-25 19:44:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-10-25 19:44:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-25 19:44:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1659 transitions. [2020-10-25 19:44:58,166 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1659 transitions. Word has length 99 [2020-10-25 19:44:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:58,166 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1659 transitions. [2020-10-25 19:44:58,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:44:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1659 transitions. [2020-10-25 19:44:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-25 19:44:58,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:58,171 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] [2020-10-25 19:44:58,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:44:58,172 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 810714872, now seen corresponding path program 1 times [2020-10-25 19:44:58,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:58,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103228772] [2020-10-25 19:44:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:58,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103228772] [2020-10-25 19:44:58,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:58,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:44:58,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164890184] [2020-10-25 19:44:58,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:58,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:58,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:58,319 INFO L87 Difference]: Start difference. First operand 1314 states and 1659 transitions. Second operand 3 states. [2020-10-25 19:44:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:59,043 INFO L93 Difference]: Finished difference Result 3543 states and 4513 transitions. [2020-10-25 19:44:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:59,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-10-25 19:44:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:59,058 INFO L225 Difference]: With dead ends: 3543 [2020-10-25 19:44:59,058 INFO L226 Difference]: Without dead ends: 2231 [2020-10-25 19:44:59,061 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 [2020-10-25 19:44:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-25 19:44:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2100. [2020-10-25 19:44:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-25 19:44:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2679 transitions. [2020-10-25 19:44:59,128 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2679 transitions. Word has length 100 [2020-10-25 19:44:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:59,130 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2679 transitions. [2020-10-25 19:44:59,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2679 transitions. [2020-10-25 19:44:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-25 19:44:59,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:59,134 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] [2020-10-25 19:44:59,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:44:59,134 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:59,135 INFO L82 PathProgramCache]: Analyzing trace with hash -785165075, now seen corresponding path program 1 times [2020-10-25 19:44:59,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:59,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033791048] [2020-10-25 19:44:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:59,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033791048] [2020-10-25 19:44:59,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:59,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:59,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549294426] [2020-10-25 19:44:59,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:59,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:59,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:59,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:59,239 INFO L87 Difference]: Start difference. First operand 2100 states and 2679 transitions. Second operand 3 states. [2020-10-25 19:44:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:59,877 INFO L93 Difference]: Finished difference Result 4460 states and 5648 transitions. [2020-10-25 19:44:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:59,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-10-25 19:44:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:59,890 INFO L225 Difference]: With dead ends: 4460 [2020-10-25 19:44:59,890 INFO L226 Difference]: Without dead ends: 2362 [2020-10-25 19:44:59,894 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 [2020-10-25 19:44:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-25 19:44:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2231. [2020-10-25 19:44:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-25 19:44:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2798 transitions. [2020-10-25 19:44:59,948 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2798 transitions. Word has length 102 [2020-10-25 19:44:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:59,949 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2798 transitions. [2020-10-25 19:44:59,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2798 transitions. [2020-10-25 19:44:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-25 19:44:59,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:59,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-25 19:44:59,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:44:59,966 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:59,967 INFO L82 PathProgramCache]: Analyzing trace with hash -902364545, now seen corresponding path program 1 times [2020-10-25 19:44:59,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:59,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366900539] [2020-10-25 19:44:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 19:45:00,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366900539] [2020-10-25 19:45:00,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:45:00,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:45:00,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614510192] [2020-10-25 19:45:00,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:45:00,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:45:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:45:00,018 INFO L87 Difference]: Start difference. First operand 2231 states and 2798 transitions. Second operand 3 states. [2020-10-25 19:45:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:00,679 INFO L93 Difference]: Finished difference Result 4853 states and 6078 transitions. [2020-10-25 19:45:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:45:00,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-10-25 19:45:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:00,693 INFO L225 Difference]: With dead ends: 4853 [2020-10-25 19:45:00,693 INFO L226 Difference]: Without dead ends: 2493 [2020-10-25 19:45:00,697 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 [2020-10-25 19:45:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-10-25 19:45:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-10-25 19:45:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-25 19:45:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2880 transitions. [2020-10-25 19:45:00,757 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2880 transitions. Word has length 103 [2020-10-25 19:45:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2880 transitions. [2020-10-25 19:45:00,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:45:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2880 transitions. [2020-10-25 19:45:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-25 19:45:00,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:45:00,762 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] [2020-10-25 19:45:00,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:45:00,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:45:00,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:45:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash 752228391, now seen corresponding path program 1 times [2020-10-25 19:45:00,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:45:00,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656384811] [2020-10-25 19:45:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:45:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:45:00,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656384811] [2020-10-25 19:45:00,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272554890] [2020-10-25 19:45:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:45:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:01,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 19:45:01,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:45:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-25 19:45:01,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:45:01,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-10-25 19:45:01,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310659450] [2020-10-25 19:45:01,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:45:01,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:45:01,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:01,233 INFO L87 Difference]: Start difference. First operand 2493 states and 2880 transitions. Second operand 3 states. [2020-10-25 19:45:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:01,826 INFO L93 Difference]: Finished difference Result 5770 states and 6647 transitions. [2020-10-25 19:45:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:45:01,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-25 19:45:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:01,842 INFO L225 Difference]: With dead ends: 5770 [2020-10-25 19:45:01,842 INFO L226 Difference]: Without dead ends: 3279 [2020-10-25 19:45:01,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-10-25 19:45:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2493. [2020-10-25 19:45:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-25 19:45:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2844 transitions. [2020-10-25 19:45:01,921 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2844 transitions. Word has length 106 [2020-10-25 19:45:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:01,922 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2844 transitions. [2020-10-25 19:45:01,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:45:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2844 transitions. [2020-10-25 19:45:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-25 19:45:01,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:45:01,929 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-25 19:45:02,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-25 19:45:02,145 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:45:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:45:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -670996178, now seen corresponding path program 1 times [2020-10-25 19:45:02,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:45:02,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759538661] [2020-10-25 19:45:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:45:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-25 19:45:02,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759538661] [2020-10-25 19:45:02,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:45:02,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:45:02,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550860103] [2020-10-25 19:45:02,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:45:02,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:45:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:45:02,247 INFO L87 Difference]: Start difference. First operand 2493 states and 2844 transitions. Second operand 4 states. [2020-10-25 19:45:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:03,039 INFO L93 Difference]: Finished difference Result 4984 states and 5686 transitions. [2020-10-25 19:45:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:45:03,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-25 19:45:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:03,050 INFO L225 Difference]: With dead ends: 4984 [2020-10-25 19:45:03,051 INFO L226 Difference]: Without dead ends: 2493 [2020-10-25 19:45:03,054 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 [2020-10-25 19:45:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-10-25 19:45:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-10-25 19:45:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-25 19:45:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2814 transitions. [2020-10-25 19:45:03,104 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2814 transitions. Word has length 146 [2020-10-25 19:45:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:03,105 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2814 transitions. [2020-10-25 19:45:03,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:45:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2814 transitions. [2020-10-25 19:45:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-25 19:45:03,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:45:03,111 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:45:03,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 19:45:03,111 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:45:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:45:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1859038104, now seen corresponding path program 1 times [2020-10-25 19:45:03,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:45:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198736379] [2020-10-25 19:45:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:45:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-25 19:45:03,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198736379] [2020-10-25 19:45:03,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572940508] [2020-10-25 19:45:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:45:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:03,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 19:45:03,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:45:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-25 19:45:03,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:45:03,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 19:45:03,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890646510] [2020-10-25 19:45:03,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:45:03,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:45:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:03,578 INFO L87 Difference]: Start difference. First operand 2493 states and 2814 transitions. Second operand 3 states. [2020-10-25 19:45:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:04,199 INFO L93 Difference]: Finished difference Result 5508 states and 6231 transitions. [2020-10-25 19:45:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:45:04,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-10-25 19:45:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:04,213 INFO L225 Difference]: With dead ends: 5508 [2020-10-25 19:45:04,213 INFO L226 Difference]: Without dead ends: 3017 [2020-10-25 19:45:04,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-25 19:45:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2020-10-25 19:45:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-10-25 19:45:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-10-25 19:45:04,281 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 175 [2020-10-25 19:45:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:04,282 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-10-25 19:45:04,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:45:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-10-25 19:45:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-25 19:45:04,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:45:04,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-25 19:45:04,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-25 19:45:04,505 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:45:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:45:04,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1305049907, now seen corresponding path program 1 times [2020-10-25 19:45:04,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:45:04,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638123352] [2020-10-25 19:45:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:45:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-25 19:45:04,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638123352] [2020-10-25 19:45:04,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322221444] [2020-10-25 19:45:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:45:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:04,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 19:45:04,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:45:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-25 19:45:04,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:45:04,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 19:45:04,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921638627] [2020-10-25 19:45:04,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:45:04,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:04,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:45:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:04,849 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-10-25 19:45:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:05,497 INFO L93 Difference]: Finished difference Result 6032 states and 6814 transitions. [2020-10-25 19:45:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:45:05,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-10-25 19:45:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:05,514 INFO L225 Difference]: With dead ends: 6032 [2020-10-25 19:45:05,514 INFO L226 Difference]: Without dead ends: 3279 [2020-10-25 19:45:05,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-10-25 19:45:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2755. [2020-10-25 19:45:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-10-25 19:45:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-10-25 19:45:05,595 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 208 [2020-10-25 19:45:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:05,596 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-10-25 19:45:05,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:45:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-10-25 19:45:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-25 19:45:05,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:45:05,605 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:45:05,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-25 19:45:05,820 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:45:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:45:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2044006231, now seen corresponding path program 1 times [2020-10-25 19:45:05,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:45:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423721193] [2020-10-25 19:45:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:45:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 119 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-25 19:45:05,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423721193] [2020-10-25 19:45:05,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995748977] [2020-10-25 19:45:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:45:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:45:06,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 19:45:06,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:45:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-25 19:45:06,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:45:06,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 19:45:06,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141466010] [2020-10-25 19:45:06,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:45:06,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:45:06,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:45:06,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:06,189 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-10-25 19:45:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:45:06,982 INFO L93 Difference]: Finished difference Result 5113 states and 5740 transitions. [2020-10-25 19:45:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:45:06,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-10-25 19:45:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:45:06,984 INFO L225 Difference]: With dead ends: 5113 [2020-10-25 19:45:06,984 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:45:06,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:45:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:45:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:45:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:45:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:45:06,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2020-10-25 19:45:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:45:06,990 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:45:06,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:45:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:45:06,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:45:07,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:45:07,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:45:07,492 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-25 19:45:07,709 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,714 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-25 19:45:07,715 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-25 19:45:07,716 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,716 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,716 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,716 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,716 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,719 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,719 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-25 19:45:07,720 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,721 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,722 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,722 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,722 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,722 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-25 19:45:07,722 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-25 19:45:07,723 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-25 19:45:07,724 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,725 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-25 19:45:07,726 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-25 19:45:07,727 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-25 19:45:07,727 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-25 19:45:07,729 INFO L270 CegarLoopResult]: At program point L576(lines 32 577) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-10-25 19:45:07,729 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-25 19:45:07,730 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-25 19:45:07,731 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-25 19:45:07,732 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-25 19:45:07,732 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-25 19:45:07,732 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-25 19:45:07,732 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-25 19:45:07,732 INFO L277 CegarLoopResult]: At program point L579(lines 579 596) the Hoare annotation is: true [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,733 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-25 19:45:07,734 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,735 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-25 19:45:07,736 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-25 19:45:07,737 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-25 19:45:07,737 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-25 19:45:07,737 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-25 19:45:07,737 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-25 19:45:07,738 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,739 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-10-25 19:45:07,739 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,739 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,739 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,739 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,739 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-25 19:45:07,740 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,741 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-25 19:45:07,742 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-25 19:45:07,743 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-25 19:45:07,744 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-25 19:45:07,745 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-25 19:45:07,746 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-25 19:45:07,747 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:45:07,747 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 19:45:07,747 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,747 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,747 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-25 19:45:07,748 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-25 19:45:07,749 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-25 19:45:07,750 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-25 19:45:07,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:45:07 BoogieIcfgContainer [2020-10-25 19:45:07,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:45:07,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:45:07,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:45:07,798 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:45:07,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:52" (3/4) ... [2020-10-25 19:45:07,802 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:45:07,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 19:45:07,836 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:45:07,837 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:45:07,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:45:08,033 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:45:08,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:45:08,035 INFO L168 Benchmark]: Toolchain (without parser) took 18109.16 ms. Allocated memory was 50.3 MB in the beginning and 249.6 MB in the end (delta: 199.2 MB). Free memory was 33.8 MB in the beginning and 115.4 MB in the end (delta: -81.6 MB). Peak memory consumption was 117.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,035 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:45:08,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.56 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 28.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.20 ms. Allocated memory is still 50.3 MB. Free memory was 28.3 MB in the beginning and 22.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,037 INFO L168 Benchmark]: Boogie Preprocessor took 81.59 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 27.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,037 INFO L168 Benchmark]: RCFGBuilder took 1874.54 ms. Allocated memory was 50.3 MB in the beginning and 79.7 MB in the end (delta: 29.4 MB). Free memory was 27.5 MB in the beginning and 54.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,038 INFO L168 Benchmark]: TraceAbstraction took 15066.48 ms. Allocated memory was 79.7 MB in the beginning and 249.6 MB in the end (delta: 169.9 MB). Free memory was 53.9 MB in the beginning and 131.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,039 INFO L168 Benchmark]: Witness Printer took 235.64 ms. Allocated memory is still 249.6 MB. Free memory was 131.1 MB in the beginning and 115.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:45:08,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 720.56 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 28.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.20 ms. Allocated memory is still 50.3 MB. Free memory was 28.3 MB in the beginning and 22.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.59 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 27.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1874.54 ms. Allocated memory was 50.3 MB in the beginning and 79.7 MB in the end (delta: 29.4 MB). Free memory was 27.5 MB in the beginning and 54.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15066.48 ms. Allocated memory was 79.7 MB in the beginning and 249.6 MB in the end (delta: 169.9 MB). Free memory was 53.9 MB in the beginning and 131.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 16.1 GB. * Witness Printer took 235.64 ms. Allocated memory is still 249.6 MB. Free memory was 131.1 MB in the beginning and 115.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 579]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && a20 == 1) && 15 <= a8))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && 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: 14.3s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1797 SDslu, 71 SDs, 0 SdLazy, 4321 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2755occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 2098 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 223 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1330 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 2243 NumberOfCodeBlocks, 2243 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2227 ConstructedInterpolants, 0 QuantifiedInterpolants, 647791 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1538 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 1607/1619 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...