./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-1.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_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16786fbfd9e08d661e858a737a2ecf42d2b8dbac ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:10:21,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:21,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:21,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:21,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:21,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:21,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:21,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:21,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:21,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:21,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:21,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:21,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:21,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:21,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:21,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:21,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:21,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:21,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:21,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:21,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:21,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:21,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:21,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:21,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:21,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:21,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:21,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:21,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:21,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:21,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:21,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:21,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:21,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:21,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:21,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:21,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:21,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:21,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:21,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:21,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:21,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:10:21,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:21,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:21,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:21,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:21,252 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:21,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:21,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:21,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:21,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:21,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:21,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:10:21,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:21,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:10:21,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:21,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:10:21,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:21,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:10:21,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:21,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:21,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:21,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:21,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:21,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:21,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:21,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:10:21,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:21,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:21,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:10:21,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:21,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16786fbfd9e08d661e858a737a2ecf42d2b8dbac [2020-11-28 03:10:21,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:21,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:21,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:21,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:21,624 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:21,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2020-11-28 03:10:21,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/data/4c7f6b71e/3be9dfad47a248f5a98597d6c9f31203/FLAG03baa8195 [2020-11-28 03:10:22,210 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:22,211 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2020-11-28 03:10:22,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/data/4c7f6b71e/3be9dfad47a248f5a98597d6c9f31203/FLAG03baa8195 [2020-11-28 03:10:22,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/data/4c7f6b71e/3be9dfad47a248f5a98597d6c9f31203 [2020-11-28 03:10:22,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:22,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:10:22,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:22,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:22,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:22,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4a53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22, skipping insertion in model container [2020-11-28 03:10:22,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:22,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:22,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:22,767 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:22,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:22,832 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:22,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22 WrapperNode [2020-11-28 03:10:22,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:22,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:22,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:10:22,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:10:22,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:22,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:22,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:22,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:22,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... [2020-11-28 03:10:22,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:22,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:22,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:22,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:22,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:23,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-28 03:10:23,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-28 03:10:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:10:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:10:23,282 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:23,294 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:10:23,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:23 BoogieIcfgContainer [2020-11-28 03:10:23,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:23,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:23,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:23,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:23,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:22" (1/3) ... [2020-11-28 03:10:23,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed49505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:23, skipping insertion in model container [2020-11-28 03:10:23,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:22" (2/3) ... [2020-11-28 03:10:23,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed49505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:23, skipping insertion in model container [2020-11-28 03:10:23,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:23" (3/3) ... [2020-11-28 03:10:23,317 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2020-11-28 03:10:23,338 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:23,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:10:23,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:10:23,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:23,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:10:23,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:23,386 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:23,386 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:23,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:23,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:23,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-28 03:10:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:10:23,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:23,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:23,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:23,440 INFO L82 PathProgramCache]: Analyzing trace with hash 666808458, now seen corresponding path program 1 times [2020-11-28 03:10:23,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:23,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442948562] [2020-11-28 03:10:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:23,699 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 03:10:23,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442948562] [2020-11-28 03:10:23,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:23,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:10:23,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500260398] [2020-11-28 03:10:23,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:23,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:23,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:23,724 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-11-28 03:10:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:23,822 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-28 03:10:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:23,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:10:23,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:23,841 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:10:23,850 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:10:23,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:10:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:10:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:10:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:10:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-28 03:10:23,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-11-28 03:10:23,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:23,897 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 03:10:23,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-28 03:10:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:10:23,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:23,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:23,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:23,900 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:23,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:23,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1352629460, now seen corresponding path program 1 times [2020-11-28 03:10:23,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:23,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018044550] [2020-11-28 03:10:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:10:24,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018044550] [2020-11-28 03:10:24,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673392195] [2020-11-28 03:10:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:10:24,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:10:24,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:24,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:10:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317950468] [2020-11-28 03:10:24,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:10:24,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:24,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:10:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:10:24,304 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-11-28 03:10:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:24,387 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-28 03:10:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:10:24,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-28 03:10:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:24,391 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:10:24,391 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:10:24,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:10:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:10:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:10:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:10:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-28 03:10:24,405 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-11-28 03:10:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:24,406 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-28 03:10:24,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:10:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 03:10:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:10:24,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:24,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:24,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:10:24,626 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:24,627 INFO L82 PathProgramCache]: Analyzing trace with hash 832070858, now seen corresponding path program 2 times [2020-11-28 03:10:24,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:24,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637715802] [2020-11-28 03:10:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 03:10:24,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637715802] [2020-11-28 03:10:24,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071206762] [2020-11-28 03:10:24,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:24,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:10:24,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:24,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:10:24,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 03:10:24,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:24,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 03:10:24,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791991132] [2020-11-28 03:10:24,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:10:24,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:10:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:10:24,972 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-11-28 03:10:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:25,100 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 03:10:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:10:25,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-28 03:10:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:25,102 INFO L225 Difference]: With dead ends: 25 [2020-11-28 03:10:25,102 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:10:25,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:10:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:10:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-28 03:10:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:10:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 03:10:25,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2020-11-28 03:10:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:25,110 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 03:10:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:10:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-28 03:10:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:10:25,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:25,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:25,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:25,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1547641236, now seen corresponding path program 3 times [2020-11-28 03:10:25,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:25,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206102596] [2020-11-28 03:10:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:25,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:10:25,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206102596] [2020-11-28 03:10:25,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477773442] [2020-11-28 03:10:25,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:25,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:10:25,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:10:25,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:10:25,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:25,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:10:25,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253359924] [2020-11-28 03:10:25,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:10:25,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:10:25,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:10:25,784 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-11-28 03:10:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:25,903 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-28 03:10:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:10:25,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-28 03:10:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:25,905 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:10:25,905 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:10:25,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:10:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:10:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 03:10:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:10:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-28 03:10:25,914 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2020-11-28 03:10:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:25,914 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-28 03:10:25,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:10:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-28 03:10:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:10:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:25,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:26,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:26,134 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:26,135 INFO L82 PathProgramCache]: Analyzing trace with hash -346978038, now seen corresponding path program 4 times [2020-11-28 03:10:26,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:26,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697738640] [2020-11-28 03:10:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 03:10:26,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697738640] [2020-11-28 03:10:26,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399644637] [2020-11-28 03:10:26,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:26,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:10:26,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:26,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:10:26,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 03:10:26,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:26,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:10:26,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163355312] [2020-11-28 03:10:26,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:10:26,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:26,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:10:26,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:10:26,533 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-11-28 03:10:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:26,680 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-28 03:10:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:10:26,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-11-28 03:10:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:26,684 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:10:26,684 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:10:26,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:10:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:10:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:10:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:10:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 03:10:26,691 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2020-11-28 03:10:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:26,698 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 03:10:26,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:10:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 03:10:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:10:26,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:26,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:26,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:26,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1234184620, now seen corresponding path program 5 times [2020-11-28 03:10:26,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:26,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086617442] [2020-11-28 03:10:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 03:10:27,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086617442] [2020-11-28 03:10:27,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638717074] [2020-11-28 03:10:27,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:27,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:10:27,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:27,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:10:27,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 03:10:27,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:27,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-28 03:10:27,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839418627] [2020-11-28 03:10:27,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:10:27,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:10:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:10:27,321 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-11-28 03:10:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:27,494 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-28 03:10:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:10:27,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-28 03:10:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:27,497 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:10:27,497 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:10:27,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:10:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:10:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 03:10:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:10:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-28 03:10:27,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2020-11-28 03:10:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:27,505 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-28 03:10:27,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:10:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-28 03:10:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 03:10:27,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:27,508 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:27,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:10:27,730 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1831214410, now seen corresponding path program 6 times [2020-11-28 03:10:27,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:27,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337148065] [2020-11-28 03:10:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 03:10:28,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337148065] [2020-11-28 03:10:28,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055793780] [2020-11-28 03:10:28,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:28,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:10:28,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:10:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 03:10:28,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:28,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-28 03:10:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502450240] [2020-11-28 03:10:28,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:10:28,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:28,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:10:28,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:10:28,194 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 12 states. [2020-11-28 03:10:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:28,392 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-28 03:10:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:10:28,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-28 03:10:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:28,395 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:10:28,395 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:10:28,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:10:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:10:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-28 03:10:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:10:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-28 03:10:28,403 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2020-11-28 03:10:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:28,404 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-28 03:10:28,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:10:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-28 03:10:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 03:10:28,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:28,408 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:28,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:28,609 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:28,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1739954964, now seen corresponding path program 7 times [2020-11-28 03:10:28,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:28,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261201170] [2020-11-28 03:10:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-28 03:10:28,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261201170] [2020-11-28 03:10:28,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420735491] [2020-11-28 03:10:28,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:10:28,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-28 03:10:29,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:29,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-28 03:10:29,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985591829] [2020-11-28 03:10:29,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:10:29,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:10:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:10:29,061 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 13 states. [2020-11-28 03:10:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:29,297 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-28 03:10:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:10:29,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-11-28 03:10:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:29,299 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:10:29,299 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:10:29,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:10:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:10:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 03:10:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:10:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-28 03:10:29,307 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2020-11-28 03:10:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:29,307 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-28 03:10:29,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:10:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-28 03:10:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:10:29,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:29,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:29,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:29,522 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash -632151670, now seen corresponding path program 8 times [2020-11-28 03:10:29,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:29,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283270625] [2020-11-28 03:10:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 03:10:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283270625] [2020-11-28 03:10:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022236381] [2020-11-28 03:10:30,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:30,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:10:30,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:30,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:10:30,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 03:10:30,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:30,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-28 03:10:30,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604465163] [2020-11-28 03:10:30,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:10:30,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:10:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:10:30,204 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 14 states. [2020-11-28 03:10:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:30,447 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-28 03:10:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:10:30,447 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-11-28 03:10:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:30,449 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:10:30,449 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:10:30,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:10:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:10:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-28 03:10:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:10:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-28 03:10:30,464 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2020-11-28 03:10:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:30,464 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-28 03:10:30,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:10:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-28 03:10:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-28 03:10:30,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:30,471 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:30,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:10:30,686 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:30,687 INFO L82 PathProgramCache]: Analyzing trace with hash 764702676, now seen corresponding path program 9 times [2020-11-28 03:10:30,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:30,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817377365] [2020-11-28 03:10:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-28 03:10:31,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817377365] [2020-11-28 03:10:31,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391166754] [2020-11-28 03:10:31,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:31,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:10:31,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 03:10:31,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-28 03:10:31,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:31,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-28 03:10:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199952711] [2020-11-28 03:10:31,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:10:31,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:10:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:10:31,300 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 15 states. [2020-11-28 03:10:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:31,523 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-11-28 03:10:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:10:31,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-11-28 03:10:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:31,525 INFO L225 Difference]: With dead ends: 46 [2020-11-28 03:10:31,526 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 03:10:31,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:10:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 03:10:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 03:10:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:10:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-11-28 03:10:31,543 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2020-11-28 03:10:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:31,543 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-11-28 03:10:31,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:10:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-11-28 03:10:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-28 03:10:31,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:31,549 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:31,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:31,750 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 554800586, now seen corresponding path program 10 times [2020-11-28 03:10:31,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:31,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207466217] [2020-11-28 03:10:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 144 proven. 20 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-11-28 03:10:33,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207466217] [2020-11-28 03:10:33,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970741691] [2020-11-28 03:10:33,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:33,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:10:33,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:33,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 97 conjunts are in the unsatisfiable core [2020-11-28 03:10:33,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-11-28 03:10:34,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:34,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 54 [2020-11-28 03:10:34,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674218936] [2020-11-28 03:10:34,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-28 03:10:34,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:34,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-28 03:10:34,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2657, Unknown=0, NotChecked=0, Total=2862 [2020-11-28 03:10:34,814 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 54 states. [2020-11-28 03:10:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:37,325 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-28 03:10:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-28 03:10:37,326 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 70 [2020-11-28 03:10:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:37,326 INFO L225 Difference]: With dead ends: 45 [2020-11-28 03:10:37,326 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:10:37,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=535, Invalid=5785, Unknown=0, NotChecked=0, Total=6320 [2020-11-28 03:10:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:10:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:10:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:10:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:10:37,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-11-28 03:10:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:37,331 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:10:37,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-28 03:10:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:10:37,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:10:37,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:37,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:10:37,590 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-28 03:10:37,591 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-28 03:10:37,591 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 10) (= ULTIMATE.start_main_~b~0 0)) [2020-11-28 03:10:37,591 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-28 03:10:37,591 INFO L274 CegarLoopResult]: For program point L13(lines 13 20) no Hoare annotation was computed. [2020-11-28 03:10:37,591 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:10:37,591 INFO L274 CegarLoopResult]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2020-11-28 03:10:37,592 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= 1 sum_~n) (= sum_~m |sum_#in~m|)) [2020-11-28 03:10:37,592 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-11-28 03:10:37,592 INFO L274 CegarLoopResult]: For program point L6(lines 6 10) no Hoare annotation was computed. [2020-11-28 03:10:37,592 INFO L274 CegarLoopResult]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2020-11-28 03:10:37,592 INFO L277 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-11-28 03:10:37,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:37 BoogieIcfgContainer [2020-11-28 03:10:37,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:37,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:37,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:37,598 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:37,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:23" (3/4) ... [2020-11-28 03:10:37,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:10:37,609 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2020-11-28 03:10:37,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:10:37,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:10:37,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:37,619 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:37,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_51cc85fa-9989-4202-bf8d-12d040cbabc5/bin/uautomizer/witness.graphml [2020-11-28 03:10:37,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:37,684 INFO L168 Benchmark]: Toolchain (without parser) took 15115.26 ms. Allocated memory was 121.6 MB in the beginning and 255.9 MB in the end (delta: 134.2 MB). Free memory was 87.0 MB in the beginning and 192.9 MB in the end (delta: -105.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,685 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 93.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:37,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.21 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 98.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 121.6 MB. Free memory was 98.2 MB in the beginning and 96.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:37,687 INFO L168 Benchmark]: Boogie Preprocessor took 33.73 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,687 INFO L168 Benchmark]: RCFGBuilder took 380.20 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 84.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,690 INFO L168 Benchmark]: TraceAbstraction took 14299.58 ms. Allocated memory was 121.6 MB in the beginning and 255.9 MB in the end (delta: 134.2 MB). Free memory was 84.1 MB in the beginning and 195.0 MB in the end (delta: -110.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,690 INFO L168 Benchmark]: Witness Printer took 84.47 ms. Allocated memory is still 255.9 MB. Free memory was 195.0 MB in the beginning and 192.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:37,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 93.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.21 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 98.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 121.6 MB. Free memory was 98.2 MB in the beginning and 96.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.73 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 380.20 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 84.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14299.58 ms. Allocated memory was 121.6 MB in the beginning and 255.9 MB in the end (delta: 134.2 MB). Free memory was 84.1 MB in the beginning and 195.0 MB in the end (delta: -110.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * Witness Printer took 84.47 ms. Allocated memory is still 255.9 MB. Free memory was 195.0 MB in the beginning and 192.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 305 SDslu, 760 SDs, 0 SdLazy, 1319 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 745 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 18 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 870 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 849 ConstructedInterpolants, 0 QuantifiedInterpolants, 148422 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1511 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 1345/2420 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...