./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0675521d022a764ecdc1621f141761ef94d4be70 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:25,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:25,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:25,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:25,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:25,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:25,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:25,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:25,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:25,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:25,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:25,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:25,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:25,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:25,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:25,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:25,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:25,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:25,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:25,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:25,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:25,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:25,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:25,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:25,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:25,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:25,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:25,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:25,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:25,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:25,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:25,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:25,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:25,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:25,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:25,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:25,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:25,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:25,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:25,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:25,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:25,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:25,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:25,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:25,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:25,220 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:25,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:25,221 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:25,221 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:25,221 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:25,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:25,222 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:25,222 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:25,222 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:25,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:25,223 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:25,223 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:25,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:25,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:25,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:25,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:25,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:25,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:25,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:25,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:25,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:25,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:25,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:25,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:25,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:25,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:25,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:25,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:25,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:25,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:25,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:25,229 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0675521d022a764ecdc1621f141761ef94d4be70 [2020-11-28 07:42:25,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:25,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:25,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:25,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:25,517 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:25,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2020-11-28 07:42:25,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/data/916befcf7/4b846783402740c9bbc0d4bb45e1d29d/FLAGb44538370 [2020-11-28 07:42:26,172 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:26,188 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2020-11-28 07:42:26,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/data/916befcf7/4b846783402740c9bbc0d4bb45e1d29d/FLAGb44538370 [2020-11-28 07:42:26,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/data/916befcf7/4b846783402740c9bbc0d4bb45e1d29d [2020-11-28 07:42:26,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:26,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:26,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:26,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:26,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:26,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8cc5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26, skipping insertion in model container [2020-11-28 07:42:26,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:26,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:26,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:26,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:27,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:27,110 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:27,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27 WrapperNode [2020-11-28 07:42:27,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:27,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:27,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:27,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:27,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:27,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:27,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:27,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:27,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:27,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:27,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:27,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:27,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:30,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:30,050 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:30,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30 BoogieIcfgContainer [2020-11-28 07:42:30,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:30,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:30,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:30,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:26" (1/3) ... [2020-11-28 07:42:30,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef2e209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:30, skipping insertion in model container [2020-11-28 07:42:30,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (2/3) ... [2020-11-28 07:42:30,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef2e209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:30, skipping insertion in model container [2020-11-28 07:42:30,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30" (3/3) ... [2020-11-28 07:42:30,062 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-11-28 07:42:30,074 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:30,079 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:30,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:30,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:30,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:30,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:30,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:30,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:30,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:30,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:30,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:42:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:42:30,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:30,149 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] [2020-11-28 07:42:30,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:30,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1520711533, now seen corresponding path program 1 times [2020-11-28 07:42:30,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:30,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80308223] [2020-11-28 07:42:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:30,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80308223] [2020-11-28 07:42:30,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:30,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:30,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422947895] [2020-11-28 07:42:30,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:30,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:30,635 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:42:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,541 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:42:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:31,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:42:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,556 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:42:31,556 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:42:31,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:42:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:42:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:42:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-28 07:42:31,608 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-28 07:42:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,609 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-28 07:42:31,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-28 07:42:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:42:31,613 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:31,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1975134654, now seen corresponding path program 1 times [2020-11-28 07:42:31,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979781595] [2020-11-28 07:42:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979781595] [2020-11-28 07:42:31,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:31,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567062525] [2020-11-28 07:42:31,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:31,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:31,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:31,685 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-28 07:42:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,293 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-28 07:42:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:32,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:42:32,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,297 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:42:32,297 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:42:32,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:42:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:42:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:42:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-28 07:42:32,322 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2020-11-28 07:42:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,322 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-28 07:42:32,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-28 07:42:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:42:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:32,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:42:32,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:32,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2064957147, now seen corresponding path program 1 times [2020-11-28 07:42:32,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336618938] [2020-11-28 07:42:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336618938] [2020-11-28 07:42:32,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:32,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:32,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086414557] [2020-11-28 07:42:32,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:32,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:32,511 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-28 07:42:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,176 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-28 07:42:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:33,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 07:42:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,180 INFO L225 Difference]: With dead ends: 715 [2020-11-28 07:42:33,180 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:42:33,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:42:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:42:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:42:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-28 07:42:33,216 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-28 07:42:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:33,217 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-28 07:42:33,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-28 07:42:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 07:42:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:33,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:42:33,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:33,227 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash -480430043, now seen corresponding path program 1 times [2020-11-28 07:42:33,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:33,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135837092] [2020-11-28 07:42:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:42:33,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135837092] [2020-11-28 07:42:33,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:33,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132308929] [2020-11-28 07:42:33,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:33,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:33,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,345 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-28 07:42:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,805 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-28 07:42:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:33,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 07:42:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,810 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:42:33,810 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:42:33,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:42:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-28 07:42:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:42:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-28 07:42:33,853 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-28 07:42:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:33,853 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-28 07:42:33,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-28 07:42:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:42:33,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:33,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:33,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:33,857 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:33,858 INFO L82 PathProgramCache]: Analyzing trace with hash -363769889, now seen corresponding path program 1 times [2020-11-28 07:42:33,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:33,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840821394] [2020-11-28 07:42:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:42:33,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840821394] [2020-11-28 07:42:33,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:33,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502143622] [2020-11-28 07:42:33,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:33,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:33,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:33,980 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-11-28 07:42:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:34,778 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-11-28 07:42:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:34,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:42:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:34,783 INFO L225 Difference]: With dead ends: 1354 [2020-11-28 07:42:34,784 INFO L226 Difference]: Without dead ends: 784 [2020-11-28 07:42:34,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-28 07:42:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-11-28 07:42:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:42:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2020-11-28 07:42:34,813 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2020-11-28 07:42:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:34,813 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2020-11-28 07:42:34,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2020-11-28 07:42:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-28 07:42:34,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,817 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:42:34,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:34,817 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,818 INFO L82 PathProgramCache]: Analyzing trace with hash -338583435, now seen corresponding path program 1 times [2020-11-28 07:42:34,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63282548] [2020-11-28 07:42:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:42:34,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63282548] [2020-11-28 07:42:34,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:34,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:34,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340679318] [2020-11-28 07:42:34,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:34,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:34,876 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2020-11-28 07:42:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:35,366 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-11-28 07:42:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:35,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-28 07:42:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:35,377 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:42:35,377 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:42:35,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:42:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:42:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:42:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2020-11-28 07:42:35,434 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2020-11-28 07:42:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:35,434 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2020-11-28 07:42:35,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2020-11-28 07:42:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-28 07:42:35,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:35,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:35,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:35,438 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash -618941123, now seen corresponding path program 1 times [2020-11-28 07:42:35,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:35,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039998082] [2020-11-28 07:42:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:42:35,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039998082] [2020-11-28 07:42:35,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:35,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:35,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480992701] [2020-11-28 07:42:35,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:35,528 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2020-11-28 07:42:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:35,927 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2020-11-28 07:42:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:35,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-28 07:42:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:35,934 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:42:35,934 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:42:35,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:42:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-28 07:42:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:42:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2020-11-28 07:42:35,967 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2020-11-28 07:42:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:35,968 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2020-11-28 07:42:35,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2020-11-28 07:42:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:42:35,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:35,972 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:35,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:35,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2031265499, now seen corresponding path program 1 times [2020-11-28 07:42:35,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:35,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405177102] [2020-11-28 07:42:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:42:36,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405177102] [2020-11-28 07:42:36,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:36,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:36,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275903035] [2020-11-28 07:42:36,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:36,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:36,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:36,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:36,181 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2020-11-28 07:42:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:36,792 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2020-11-28 07:42:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:36,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:42:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:36,798 INFO L225 Difference]: With dead ends: 1922 [2020-11-28 07:42:36,799 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:42:36,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:42:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:42:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:42:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-28 07:42:36,832 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-11-28 07:42:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:36,832 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-28 07:42:36,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-28 07:42:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:42:36,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:36,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:36,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:36,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:36,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:36,839 INFO L82 PathProgramCache]: Analyzing trace with hash -536184206, now seen corresponding path program 1 times [2020-11-28 07:42:36,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:36,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001386422] [2020-11-28 07:42:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 07:42:37,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001386422] [2020-11-28 07:42:37,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:37,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:37,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291332021] [2020-11-28 07:42:37,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:37,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:37,033 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-28 07:42:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:37,448 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2020-11-28 07:42:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:37,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:42:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:37,457 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:37,457 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:42:37,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:42:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-28 07:42:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:42:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-11-28 07:42:37,493 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 171 [2020-11-28 07:42:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:37,494 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-11-28 07:42:37,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-11-28 07:42:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-28 07:42:37,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:37,503 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:37,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:37,503 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash 677812987, now seen corresponding path program 1 times [2020-11-28 07:42:37,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:37,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924352293] [2020-11-28 07:42:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-28 07:42:37,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924352293] [2020-11-28 07:42:37,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:37,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:37,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840595828] [2020-11-28 07:42:37,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:37,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:37,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:37,684 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2020-11-28 07:42:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:38,083 INFO L93 Difference]: Finished difference Result 2277 states and 2796 transitions. [2020-11-28 07:42:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:38,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-11-28 07:42:38,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:38,092 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:38,092 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:42:38,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:42:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-11-28 07:42:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:42:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1375 transitions. [2020-11-28 07:42:38,131 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1375 transitions. Word has length 220 [2020-11-28 07:42:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:38,131 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1375 transitions. [2020-11-28 07:42:38,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1375 transitions. [2020-11-28 07:42:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-11-28 07:42:38,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:38,137 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:38,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:42:38,137 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash 733154466, now seen corresponding path program 1 times [2020-11-28 07:42:38,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:38,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508959224] [2020-11-28 07:42:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 252 proven. 35 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-28 07:42:38,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508959224] [2020-11-28 07:42:38,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128037735] [2020-11-28 07:42:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:38,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-11-28 07:42:38,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-11-28 07:42:38,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:42:38,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245882186] [2020-11-28 07:42:38,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:38,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:39,000 INFO L87 Difference]: Start difference. First operand 1139 states and 1375 transitions. Second operand 3 states. [2020-11-28 07:42:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:39,457 INFO L93 Difference]: Finished difference Result 2490 states and 3053 transitions. [2020-11-28 07:42:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:39,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-11-28 07:42:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:39,468 INFO L225 Difference]: With dead ends: 2490 [2020-11-28 07:42:39,469 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:42:39,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:42:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2020-11-28 07:42:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-11-28 07:42:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1584 transitions. [2020-11-28 07:42:39,521 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1584 transitions. Word has length 233 [2020-11-28 07:42:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:39,521 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1584 transitions. [2020-11-28 07:42:39,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1584 transitions. [2020-11-28 07:42:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-28 07:42:39,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:39,528 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-28 07:42:39,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 07:42:39,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash -995891644, now seen corresponding path program 1 times [2020-11-28 07:42:39,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:39,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261831024] [2020-11-28 07:42:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-28 07:42:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261831024] [2020-11-28 07:42:39,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:39,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:39,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506726433] [2020-11-28 07:42:39,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:39,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:39,968 INFO L87 Difference]: Start difference. First operand 1281 states and 1584 transitions. Second operand 3 states. [2020-11-28 07:42:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:40,430 INFO L93 Difference]: Finished difference Result 2774 states and 3405 transitions. [2020-11-28 07:42:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:40,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-11-28 07:42:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:40,439 INFO L225 Difference]: With dead ends: 2774 [2020-11-28 07:42:40,439 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:42:40,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:42:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-28 07:42:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1462 transitions. [2020-11-28 07:42:40,479 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1462 transitions. Word has length 242 [2020-11-28 07:42:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:40,480 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1462 transitions. [2020-11-28 07:42:40,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1462 transitions. [2020-11-28 07:42:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-28 07:42:40,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:40,486 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2020-11-28 07:42:40,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:42:40,486 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1666825104, now seen corresponding path program 1 times [2020-11-28 07:42:40,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:40,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940363763] [2020-11-28 07:42:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 334 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:42:41,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940363763] [2020-11-28 07:42:41,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488367620] [2020-11-28 07:42:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:41,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:41,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-28 07:42:41,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-28 07:42:41,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:41,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:42:41,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913692911] [2020-11-28 07:42:41,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:41,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:41,463 INFO L87 Difference]: Start difference. First operand 1210 states and 1462 transitions. Second operand 3 states. [2020-11-28 07:42:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:41,897 INFO L93 Difference]: Finished difference Result 2417 states and 2928 transitions. [2020-11-28 07:42:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:41,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2020-11-28 07:42:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:41,898 INFO L225 Difference]: With dead ends: 2417 [2020-11-28 07:42:41,899 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:41,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:41,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2020-11-28 07:42:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:41,904 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:41,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:41,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:42,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 07:42:42,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:42,452 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-28 07:42:42,812 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-28 07:42:42,815 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:42:42,816 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:42:42,817 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:42:42,818 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:42:42,819 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:42:42,820 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:42:42,820 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:42:42,821 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:42:42,822 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:42:42,823 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:42:42,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:42 BoogieIcfgContainer [2020-11-28 07:42:42,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:42,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:42,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:42,874 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:42,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30" (3/4) ... [2020-11-28 07:42:42,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:42,906 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:42:42,908 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:42:42,911 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:42:42,916 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:42:43,131 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3994eb23-e569-4ebb-8617-4ed0af28efd4/bin/utaipan/witness.graphml [2020-11-28 07:42:43,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:43,133 INFO L168 Benchmark]: Toolchain (without parser) took 16679.89 ms. Allocated memory was 119.5 MB in the beginning and 411.0 MB in the end (delta: 291.5 MB). Free memory was 90.0 MB in the beginning and 251.1 MB in the end (delta: -161.2 MB). Peak memory consumption was 130.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,134 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 77.0 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:43,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.20 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 76.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.43 ms. Allocated memory is still 119.5 MB. Free memory was 76.7 MB in the beginning and 71.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,135 INFO L168 Benchmark]: Boogie Preprocessor took 75.04 ms. Allocated memory is still 119.5 MB. Free memory was 71.1 MB in the beginning and 66.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,136 INFO L168 Benchmark]: RCFGBuilder took 2762.73 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 66.5 MB in the beginning and 117.4 MB in the end (delta: -50.9 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,136 INFO L168 Benchmark]: TraceAbstraction took 12818.92 ms. Allocated memory was 174.1 MB in the beginning and 411.0 MB in the end (delta: 237.0 MB). Free memory was 116.3 MB in the beginning and 266.8 MB in the end (delta: -150.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,137 INFO L168 Benchmark]: Witness Printer took 258.35 ms. Allocated memory is still 411.0 MB. Free memory was 266.8 MB in the beginning and 251.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:43,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 77.0 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.20 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 76.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.43 ms. Allocated memory is still 119.5 MB. Free memory was 76.7 MB in the beginning and 71.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.04 ms. Allocated memory is still 119.5 MB. Free memory was 71.1 MB in the beginning and 66.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2762.73 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 66.5 MB in the beginning and 117.4 MB in the end (delta: -50.9 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12818.92 ms. Allocated memory was 174.1 MB in the beginning and 411.0 MB in the end (delta: 237.0 MB). Free memory was 116.3 MB in the beginning and 266.8 MB in the end (delta: -150.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. * Witness Printer took 258.35 ms. Allocated memory is still 411.0 MB. Free memory was 266.8 MB in the beginning and 251.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((a16 <= 5 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a16 <= 5 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 925 SDslu, 61 SDs, 0 SdLazy, 2947 SolverSat, 719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1068 GetRequests, 1042 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1960 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3053 ConstructedInterpolants, 0 QuantifiedInterpolants, 1955779 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1130 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 3985/4173 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...