./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o5_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o5_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb806ae997f94b7f09b4e2dce31a0e63ff1a329 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 09:42:00,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 09:42:00,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 09:42:00,063 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 09:42:00,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 09:42:00,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 09:42:00,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 09:42:00,066 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 09:42:00,066 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 09:42:00,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 09:42:00,068 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 09:42:00,068 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 09:42:00,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 09:42:00,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 09:42:00,069 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 09:42:00,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 09:42:00,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 09:42:00,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 09:42:00,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 09:42:00,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 09:42:00,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 09:42:00,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 09:42:00,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 09:42:00,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 09:42:00,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 09:42:00,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 09:42:00,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 09:42:00,078 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 09:42:00,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 09:42:00,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 09:42:00,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 09:42:00,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 09:42:00,080 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 09:42:00,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 09:42:00,081 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 09:42:00,082 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 09:42:00,082 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 09:42:00,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 09:42:00,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 09:42:00,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 09:42:00,091 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 09:42:00,092 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 09:42:00,092 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 09:42:00,092 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 09:42:00,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 09:42:00,092 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 09:42:00,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 09:42:00,094 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 09:42:00,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 09:42:00,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 09:42:00,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/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(__VERIFIER_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 -> ceb806ae997f94b7f09b4e2dce31a0e63ff1a329 [2018-12-08 09:42:00,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 09:42:00,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 09:42:00,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 09:42:00,127 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 09:42:00,128 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 09:42:00,128 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 09:42:00,164 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/data/5774fd603/b7ee49c3abb24578bc0bc250b0f7130c/FLAG85f48ce2c [2018-12-08 09:42:00,580 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 09:42:00,581 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/sv-benchmarks/c/recursive-simple/id2_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 09:42:00,584 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/data/5774fd603/b7ee49c3abb24578bc0bc250b0f7130c/FLAG85f48ce2c [2018-12-08 09:42:00,594 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/data/5774fd603/b7ee49c3abb24578bc0bc250b0f7130c [2018-12-08 09:42:00,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 09:42:00,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 09:42:00,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 09:42:00,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 09:42:00,599 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 09:42:00,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f0260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00, skipping insertion in model container [2018-12-08 09:42:00,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 09:42:00,615 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 09:42:00,713 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:42:00,716 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 09:42:00,726 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:42:00,735 INFO L195 MainTranslator]: Completed translation [2018-12-08 09:42:00,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00 WrapperNode [2018-12-08 09:42:00,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 09:42:00,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 09:42:00,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 09:42:00,736 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 09:42:00,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 09:42:00,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 09:42:00,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 09:42:00,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 09:42:00,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... [2018-12-08 09:42:00,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 09:42:00,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 09:42:00,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 09:42:00,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 09:42:00,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/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 [2018-12-08 09:42:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 09:42:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 09:42:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-12-08 09:42:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-12-08 09:42:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 09:42:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 09:42:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 09:42:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 09:42:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-08 09:42:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-08 09:42:00,907 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 09:42:00,908 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 09:42:00,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:42:00 BoogieIcfgContainer [2018-12-08 09:42:00,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 09:42:00,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 09:42:00,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 09:42:00,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 09:42:00,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 09:42:00" (1/3) ... [2018-12-08 09:42:00,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85984f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:42:00, skipping insertion in model container [2018-12-08 09:42:00,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:42:00" (2/3) ... [2018-12-08 09:42:00,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85984f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:42:00, skipping insertion in model container [2018-12-08 09:42:00,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:42:00" (3/3) ... [2018-12-08 09:42:00,912 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 09:42:00,917 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 09:42:00,921 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 09:42:00,930 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 09:42:00,946 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 09:42:00,946 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 09:42:00,947 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 09:42:00,947 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 09:42:00,947 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 09:42:00,947 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 09:42:00,947 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 09:42:00,947 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 09:42:00,947 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 09:42:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-08 09:42:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 09:42:00,960 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:00,960 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:00,961 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:00,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-12-08 09:42:00,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:00,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:00,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:00,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:00,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:42:01,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 09:42:01,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 09:42:01,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 09:42:01,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,096 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-12-08 09:42:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,124 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-08 09:42:01,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 09:42:01,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-08 09:42:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,131 INFO L225 Difference]: With dead ends: 40 [2018-12-08 09:42:01,131 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 09:42:01,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 09:42:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 09:42:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 09:42:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-08 09:42:01,158 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-12-08 09:42:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,159 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-08 09:42:01,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 09:42:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-08 09:42:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 09:42:01,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,160 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-12-08 09:42:01,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:42:01,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 09:42:01,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 09:42:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 09:42:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,215 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-08 09:42:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,227 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-12-08 09:42:01,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 09:42:01,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-08 09:42:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,228 INFO L225 Difference]: With dead ends: 44 [2018-12-08 09:42:01,228 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 09:42:01,229 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 09:42:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 09:42:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 09:42:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 09:42:01,233 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 09:42:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,233 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 09:42:01,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 09:42:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 09:42:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 09:42:01,234 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,234 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,234 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-12-08 09:42:01,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:42:01,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 09:42:01,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 09:42:01,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 09:42:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 09:42:01,298 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-12-08 09:42:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,328 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-08 09:42:01,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 09:42:01,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-12-08 09:42:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,329 INFO L225 Difference]: With dead ends: 36 [2018-12-08 09:42:01,329 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 09:42:01,329 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-12-08 09:42:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 09:42:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 09:42:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 09:42:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 09:42:01,332 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 09:42:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,332 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 09:42:01,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 09:42:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 09:42:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 09:42:01,333 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,333 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,333 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-12-08 09:42:01,334 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:42:01,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 09:42:01,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 09:42:01,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 09:42:01,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,373 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-12-08 09:42:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,383 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-08 09:42:01,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 09:42:01,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 09:42:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,384 INFO L225 Difference]: With dead ends: 48 [2018-12-08 09:42:01,384 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 09:42:01,384 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 09:42:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 09:42:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 09:42:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 09:42:01,388 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 09:42:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,388 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 09:42:01,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 09:42:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 09:42:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 09:42:01,388 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,388 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,389 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-12-08 09:42:01,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:42:01,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 09:42:01,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 09:42:01,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 09:42:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,429 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 09:42:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,435 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-12-08 09:42:01,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 09:42:01,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 09:42:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,436 INFO L225 Difference]: With dead ends: 40 [2018-12-08 09:42:01,436 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 09:42:01,437 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 09:42:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 09:42:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 09:42:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 09:42:01,440 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 09:42:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,440 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 09:42:01,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 09:42:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 09:42:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 09:42:01,440 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,440 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,440 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-12-08 09:42:01,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:42:01,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:42:01,559 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:42:01,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:42:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:42:01,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 09:42:01,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-08 09:42:01,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 09:42:01,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 09:42:01,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-08 09:42:01,629 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2018-12-08 09:42:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,684 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-08 09:42:01,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 09:42:01,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-12-08 09:42:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,686 INFO L225 Difference]: With dead ends: 56 [2018-12-08 09:42:01,686 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 09:42:01,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-12-08 09:42:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 09:42:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-12-08 09:42:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 09:42:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 09:42:01,689 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 09:42:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,690 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 09:42:01,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 09:42:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 09:42:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-08 09:42:01,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,690 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,691 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,691 INFO L82 PathProgramCache]: Analyzing trace with hash 906172561, now seen corresponding path program 1 times [2018-12-08 09:42:01,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 09:42:01,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:42:01,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 09:42:01,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 09:42:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 09:42:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,735 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 09:42:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:01,744 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-08 09:42:01,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 09:42:01,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-12-08 09:42:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:01,745 INFO L225 Difference]: With dead ends: 54 [2018-12-08 09:42:01,745 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 09:42:01,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 09:42:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 09:42:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-12-08 09:42:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 09:42:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-08 09:42:01,748 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2018-12-08 09:42:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:01,748 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-08 09:42:01,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 09:42:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-08 09:42:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-08 09:42:01,749 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:01,749 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:01,749 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:01,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2018-12-08 09:42:01,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:01,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:01,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 09:42:01,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:42:01,878 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:42:01,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:01,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:42:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 09:42:01,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 09:42:01,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-12-08 09:42:01,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-08 09:42:01,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-08 09:42:01,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-12-08 09:42:01,945 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 15 states. [2018-12-08 09:42:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:02,021 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2018-12-08 09:42:02,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 09:42:02,021 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-12-08 09:42:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:02,022 INFO L225 Difference]: With dead ends: 74 [2018-12-08 09:42:02,022 INFO L226 Difference]: Without dead ends: 54 [2018-12-08 09:42:02,022 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-12-08 09:42:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-08 09:42:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2018-12-08 09:42:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 09:42:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-12-08 09:42:02,026 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2018-12-08 09:42:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:02,026 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-12-08 09:42:02,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-08 09:42:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-12-08 09:42:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-08 09:42:02,027 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:02,027 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:02,027 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:02,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:02,027 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2018-12-08 09:42:02,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:02,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:02,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:02,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:42:02,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 09:42:02,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:42:02,179 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:42:02,187 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 09:42:02,203 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 09:42:02,203 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 09:42:02,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:42:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 09:42:02,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 09:42:02,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 17 [2018-12-08 09:42:02,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-08 09:42:02,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-08 09:42:02,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-12-08 09:42:02,243 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 17 states. [2018-12-08 09:42:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:02,329 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2018-12-08 09:42:02,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 09:42:02,329 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2018-12-08 09:42:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:02,330 INFO L225 Difference]: With dead ends: 78 [2018-12-08 09:42:02,330 INFO L226 Difference]: Without dead ends: 60 [2018-12-08 09:42:02,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-12-08 09:42:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-08 09:42:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2018-12-08 09:42:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-12-08 09:42:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-12-08 09:42:02,335 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 41 [2018-12-08 09:42:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:02,336 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-12-08 09:42:02,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-08 09:42:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-12-08 09:42:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-08 09:42:02,337 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:42:02,337 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:42:02,337 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:42:02,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:42:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1496626328, now seen corresponding path program 2 times [2018-12-08 09:42:02,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:42:02,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:42:02,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:02,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:42:02,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:42:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:42:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-12-08 09:42:02,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:42:02,454 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:42:02,460 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 09:42:02,465 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-08 09:42:02,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 09:42:02,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:42:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-08 09:42:02,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 09:42:02,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2018-12-08 09:42:02,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-08 09:42:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-08 09:42:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-12-08 09:42:02,533 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 17 states. [2018-12-08 09:42:02,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:42:02,618 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-12-08 09:42:02,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-08 09:42:02,618 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2018-12-08 09:42:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 09:42:02,619 INFO L225 Difference]: With dead ends: 66 [2018-12-08 09:42:02,619 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 09:42:02,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-12-08 09:42:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 09:42:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 09:42:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 09:42:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 09:42:02,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-12-08 09:42:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 09:42:02,620 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:42:02,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-08 09:42:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 09:42:02,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 09:42:02,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 09:42:02,631 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 09:42:02,631 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 09:42:02,631 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-12-08 09:42:02,631 INFO L451 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-12-08 09:42:02,631 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-08 09:42:02,631 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-08 09:42:02,631 INFO L448 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-12-08 09:42:02,631 INFO L451 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 09:42:02,632 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L451 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-12-08 09:42:02,632 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L451 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-12-08 09:42:02,633 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-12-08 09:42:02,633 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-12-08 09:42:02,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 09:42:02 BoogieIcfgContainer [2018-12-08 09:42:02,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 09:42:02,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 09:42:02,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 09:42:02,636 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 09:42:02,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:42:00" (3/4) ... [2018-12-08 09:42:02,638 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 09:42:02,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 09:42:02,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-12-08 09:42:02,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 09:42:02,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-12-08 09:42:02,645 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 09:42:02,645 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 09:42:02,645 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 09:42:02,668 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_02321996-9cc5-40ba-989b-26a9cdd8f3aa/bin-2019/uautomizer/witness.graphml [2018-12-08 09:42:02,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 09:42:02,669 INFO L168 Benchmark]: Toolchain (without parser) took 2073.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 956.1 MB in the beginning and 981.8 MB in the end (delta: -25.7 MB). Peak memory consumption was 70.2 MB. Max. memory is 11.5 GB. [2018-12-08 09:42:02,670 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 977.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:42:02,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.1 MB in the beginning and 945.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 09:42:02,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.50 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:42:02,671 INFO L168 Benchmark]: Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:42:02,671 INFO L168 Benchmark]: RCFGBuilder took 148.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-08 09:42:02,671 INFO L168 Benchmark]: TraceAbstraction took 1726.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. [2018-12-08 09:42:02,671 INFO L168 Benchmark]: Witness Printer took 33.06 ms. Allocated memory is still 1.1 GB. Free memory was 986.9 MB in the beginning and 981.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-12-08 09:42:02,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 977.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.1 MB in the beginning and 945.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.50 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 148.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1726.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.06 ms. Allocated memory is still 1.1 GB. Free memory was 986.9 MB in the beginning and 981.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 5 procedures, 28 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 301 SDtfs, 36 SDslu, 2102 SDs, 0 SdLazy, 531 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 155 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 34 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 441 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 43099 SizeOfPredicates, 13 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 121/165 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...