./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 a2c46755d0cb80f6b2e7b990e0a1bd9a49737b84 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 a2c46755d0cb80f6b2e7b990e0a1bd9a49737b84 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:14:25,548 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:14:25,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:14:25,568 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:14:25,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:14:25,569 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:14:25,573 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:14:25,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:14:25,576 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:14:25,578 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:14:25,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:14:25,580 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:14:25,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:14:25,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:14:25,593 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:14:25,594 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:14:25,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:14:25,596 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:14:25,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:14:25,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:14:25,601 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:14:25,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:14:25,603 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:14:25,603 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:14:25,603 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:14:25,604 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:14:25,605 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:14:25,607 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:14:25,608 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:14:25,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:14:25,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:14:25,610 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:14:25,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:14:25,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:14:25,611 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:14:25,612 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:14:25,612 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:14:25,623 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:14:25,623 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:14:25,624 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:14:25,624 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:14:25,625 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:14:25,625 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:14:25,625 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:14:25,626 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:14:25,626 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:14:25,626 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:14:25,626 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:14:25,626 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:14:25,626 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:14:25,627 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:14:25,628 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:14:25,628 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:14:25,628 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:14:25,628 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:14:25,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:14:25,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:14:25,628 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:14:25,629 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:14:25,629 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:14:25,629 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:14:25,631 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:14:25,631 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_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 -> a2c46755d0cb80f6b2e7b990e0a1bd9a49737b84 [2018-11-18 09:14:25,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:14:25,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:14:25,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:14:25,671 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:14:25,671 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:14:25,672 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:25,719 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/7595dbaae/70b52150bae34dcfbbc5edb244e38203/FLAGded0fd842 [2018-11-18 09:14:26,085 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:14:26,086 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:26,095 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/7595dbaae/70b52150bae34dcfbbc5edb244e38203/FLAGded0fd842 [2018-11-18 09:14:26,497 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/7595dbaae/70b52150bae34dcfbbc5edb244e38203 [2018-11-18 09:14:26,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:14:26,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:14:26,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:14:26,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:14:26,504 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:14:26,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4636ef09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26, skipping insertion in model container [2018-11-18 09:14:26,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:14:26,529 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:14:26,670 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:14:26,673 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:14:26,701 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:14:26,712 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:14:26,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26 WrapperNode [2018-11-18 09:14:26,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:14:26,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:14:26,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:14:26,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:14:26,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... [2018-11-18 09:14:26,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:14:26,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:14:26,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:14:26,747 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:14:26,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 [2018-11-18 09:14:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:14:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:14:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 09:14:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2018-11-18 09:14:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2018-11-18 09:14:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:14:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:14:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:14:27,153 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:14:27,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:27 BoogieIcfgContainer [2018-11-18 09:14:27,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:14:27,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:14:27,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:14:27,157 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:14:27,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:14:26" (1/3) ... [2018-11-18 09:14:27,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35caf15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:27, skipping insertion in model container [2018-11-18 09:14:27,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:26" (2/3) ... [2018-11-18 09:14:27,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35caf15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:27, skipping insertion in model container [2018-11-18 09:14:27,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:27" (3/3) ... [2018-11-18 09:14:27,160 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:27,167 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:14:27,173 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:14:27,182 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:14:27,207 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:14:27,208 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:14:27,208 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:14:27,208 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:14:27,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:14:27,208 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:14:27,208 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:14:27,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:14:27,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:14:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-11-18 09:14:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 09:14:27,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:27,231 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:27,233 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:27,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash -486194587, now seen corresponding path program 1 times [2018-11-18 09:14:27,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:27,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:27,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:27,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:27,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:27,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:14:27,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:14:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:14:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:14:27,343 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2018-11-18 09:14:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:27,365 INFO L93 Difference]: Finished difference Result 79 states and 115 transitions. [2018-11-18 09:14:27,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:14:27,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 09:14:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:27,374 INFO L225 Difference]: With dead ends: 79 [2018-11-18 09:14:27,374 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 09:14:27,376 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:14:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 09:14:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 09:14:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 09:14:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2018-11-18 09:14:27,403 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 21 [2018-11-18 09:14:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:27,403 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2018-11-18 09:14:27,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:14:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2018-11-18 09:14:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 09:14:27,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:27,404 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:27,405 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:27,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1212978296, now seen corresponding path program 1 times [2018-11-18 09:14:27,405 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:27,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:27,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:27,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:27,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:27,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:14:27,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:14:27,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:14:27,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:14:27,538 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand 3 states. [2018-11-18 09:14:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:27,793 INFO L93 Difference]: Finished difference Result 108 states and 175 transitions. [2018-11-18 09:14:27,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:14:27,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-18 09:14:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:27,795 INFO L225 Difference]: With dead ends: 108 [2018-11-18 09:14:27,796 INFO L226 Difference]: Without dead ends: 74 [2018-11-18 09:14:27,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:14:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-18 09:14:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2018-11-18 09:14:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-18 09:14:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2018-11-18 09:14:27,804 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 23 [2018-11-18 09:14:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:27,804 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2018-11-18 09:14:27,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:14:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2018-11-18 09:14:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 09:14:27,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:27,805 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:27,806 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:27,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2067837576, now seen corresponding path program 1 times [2018-11-18 09:14:27,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:27,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:27,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:27,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:27,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:27,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:14:27,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:14:27,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:14:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:27,948 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2018-11-18 09:14:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:28,383 INFO L93 Difference]: Finished difference Result 167 states and 270 transitions. [2018-11-18 09:14:28,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:14:28,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 09:14:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:28,386 INFO L225 Difference]: With dead ends: 167 [2018-11-18 09:14:28,386 INFO L226 Difference]: Without dead ends: 133 [2018-11-18 09:14:28,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-18 09:14:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2018-11-18 09:14:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-18 09:14:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2018-11-18 09:14:28,393 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 30 [2018-11-18 09:14:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:28,393 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2018-11-18 09:14:28,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:14:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2018-11-18 09:14:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 09:14:28,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:28,394 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:28,394 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:28,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:28,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1088003788, now seen corresponding path program 1 times [2018-11-18 09:14:28,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:28,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:28,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:28,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:28,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:14:28,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:28,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:14:28,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:14:28,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:14:28,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:28,496 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand 4 states. [2018-11-18 09:14:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:28,700 INFO L93 Difference]: Finished difference Result 257 states and 390 transitions. [2018-11-18 09:14:28,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:14:28,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-18 09:14:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:28,702 INFO L225 Difference]: With dead ends: 257 [2018-11-18 09:14:28,703 INFO L226 Difference]: Without dead ends: 182 [2018-11-18 09:14:28,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-11-18 09:14:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 132. [2018-11-18 09:14:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-18 09:14:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 196 transitions. [2018-11-18 09:14:28,712 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 196 transitions. Word has length 37 [2018-11-18 09:14:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:28,713 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 196 transitions. [2018-11-18 09:14:28,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:14:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 196 transitions. [2018-11-18 09:14:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 09:14:28,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:28,714 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:28,715 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:28,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash -817205964, now seen corresponding path program 1 times [2018-11-18 09:14:28,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:28,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:28,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:28,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:28,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 09:14:28,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:28,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:14:28,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:14:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:14:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:28,853 INFO L87 Difference]: Start difference. First operand 132 states and 196 transitions. Second operand 5 states. [2018-11-18 09:14:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:29,203 INFO L93 Difference]: Finished difference Result 372 states and 556 transitions. [2018-11-18 09:14:29,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:14:29,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-11-18 09:14:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:29,206 INFO L225 Difference]: With dead ends: 372 [2018-11-18 09:14:29,206 INFO L226 Difference]: Without dead ends: 259 [2018-11-18 09:14:29,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-11-18 09:14:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 140. [2018-11-18 09:14:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-11-18 09:14:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 207 transitions. [2018-11-18 09:14:29,220 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 207 transitions. Word has length 44 [2018-11-18 09:14:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:29,220 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 207 transitions. [2018-11-18 09:14:29,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:14:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 207 transitions. [2018-11-18 09:14:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 09:14:29,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:29,222 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:29,222 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:29,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1610975370, now seen corresponding path program 1 times [2018-11-18 09:14:29,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:29,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:29,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:29,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:29,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 09:14:29,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:29,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:14:29,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:14:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:14:29,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:29,302 INFO L87 Difference]: Start difference. First operand 140 states and 207 transitions. Second operand 5 states. [2018-11-18 09:14:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:29,605 INFO L93 Difference]: Finished difference Result 380 states and 564 transitions. [2018-11-18 09:14:29,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:14:29,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-11-18 09:14:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:29,607 INFO L225 Difference]: With dead ends: 380 [2018-11-18 09:14:29,607 INFO L226 Difference]: Without dead ends: 267 [2018-11-18 09:14:29,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-11-18 09:14:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 153. [2018-11-18 09:14:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-11-18 09:14:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2018-11-18 09:14:29,619 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 45 [2018-11-18 09:14:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:29,619 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2018-11-18 09:14:29,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:14:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2018-11-18 09:14:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:14:29,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:29,621 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:29,621 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:29,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1012075515, now seen corresponding path program 1 times [2018-11-18 09:14:29,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:29,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:29,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:29,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:29,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:14:29,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:14:29,760 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 [2018-11-18 09:14:29,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:29,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 09:14:29,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:14:29,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-11-18 09:14:29,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 09:14:29,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:14:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:29,879 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand 7 states. [2018-11-18 09:14:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:30,388 INFO L93 Difference]: Finished difference Result 356 states and 547 transitions. [2018-11-18 09:14:30,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:14:30,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-11-18 09:14:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:30,389 INFO L225 Difference]: With dead ends: 356 [2018-11-18 09:14:30,390 INFO L226 Difference]: Without dead ends: 242 [2018-11-18 09:14:30,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:14:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-11-18 09:14:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 199. [2018-11-18 09:14:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-11-18 09:14:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 259 transitions. [2018-11-18 09:14:30,398 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 259 transitions. Word has length 46 [2018-11-18 09:14:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:30,399 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 259 transitions. [2018-11-18 09:14:30,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 09:14:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 259 transitions. [2018-11-18 09:14:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 09:14:30,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:30,400 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:30,400 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:30,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:30,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1144834017, now seen corresponding path program 1 times [2018-11-18 09:14:30,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:30,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:30,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:30,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:30,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-18 09:14:30,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:30,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:14:30,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:14:30,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:14:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:30,462 INFO L87 Difference]: Start difference. First operand 199 states and 259 transitions. Second operand 6 states. [2018-11-18 09:14:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:30,844 INFO L93 Difference]: Finished difference Result 689 states and 903 transitions. [2018-11-18 09:14:30,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:14:30,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-11-18 09:14:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:30,851 INFO L225 Difference]: With dead ends: 689 [2018-11-18 09:14:30,851 INFO L226 Difference]: Without dead ends: 529 [2018-11-18 09:14:30,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:14:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2018-11-18 09:14:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 199. [2018-11-18 09:14:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-11-18 09:14:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 259 transitions. [2018-11-18 09:14:30,861 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 259 transitions. Word has length 53 [2018-11-18 09:14:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:30,861 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 259 transitions. [2018-11-18 09:14:30,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:14:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 259 transitions. [2018-11-18 09:14:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 09:14:30,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:30,863 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:30,863 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:30,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:30,863 INFO L82 PathProgramCache]: Analyzing trace with hash -257162562, now seen corresponding path program 1 times [2018-11-18 09:14:30,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:30,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:30,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:30,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:30,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-18 09:14:30,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:30,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:14:30,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:14:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:14:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:30,947 INFO L87 Difference]: Start difference. First operand 199 states and 259 transitions. Second operand 6 states. [2018-11-18 09:14:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:31,336 INFO L93 Difference]: Finished difference Result 673 states and 883 transitions. [2018-11-18 09:14:31,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:14:31,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2018-11-18 09:14:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:31,339 INFO L225 Difference]: With dead ends: 673 [2018-11-18 09:14:31,339 INFO L226 Difference]: Without dead ends: 514 [2018-11-18 09:14:31,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:14:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2018-11-18 09:14:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 423. [2018-11-18 09:14:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-11-18 09:14:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 567 transitions. [2018-11-18 09:14:31,357 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 567 transitions. Word has length 54 [2018-11-18 09:14:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:31,358 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 567 transitions. [2018-11-18 09:14:31,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:14:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 567 transitions. [2018-11-18 09:14:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-18 09:14:31,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:31,360 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:31,360 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:31,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash 40898758, now seen corresponding path program 1 times [2018-11-18 09:14:31,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:31,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:31,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:31,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:31,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-18 09:14:31,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:31,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 09:14:31,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:14:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:14:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:14:31,545 INFO L87 Difference]: Start difference. First operand 423 states and 567 transitions. Second operand 8 states. [2018-11-18 09:14:31,734 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-18 09:14:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:33,249 INFO L93 Difference]: Finished difference Result 2116 states and 2900 transitions. [2018-11-18 09:14:33,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:14:33,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2018-11-18 09:14:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:33,253 INFO L225 Difference]: With dead ends: 2116 [2018-11-18 09:14:33,253 INFO L226 Difference]: Without dead ends: 1693 [2018-11-18 09:14:33,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:14:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2018-11-18 09:14:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1302. [2018-11-18 09:14:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2018-11-18 09:14:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1782 transitions. [2018-11-18 09:14:33,301 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1782 transitions. Word has length 55 [2018-11-18 09:14:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:33,302 INFO L480 AbstractCegarLoop]: Abstraction has 1302 states and 1782 transitions. [2018-11-18 09:14:33,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:14:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1782 transitions. [2018-11-18 09:14:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 09:14:33,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:33,304 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:33,304 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:33,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:33,304 INFO L82 PathProgramCache]: Analyzing trace with hash 869926361, now seen corresponding path program 1 times [2018-11-18 09:14:33,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:33,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:33,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:33,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:33,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 09:14:33,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:33,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:14:33,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:14:33,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:14:33,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:33,481 INFO L87 Difference]: Start difference. First operand 1302 states and 1782 transitions. Second operand 4 states. [2018-11-18 09:14:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:33,702 INFO L93 Difference]: Finished difference Result 1794 states and 2453 transitions. [2018-11-18 09:14:33,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:14:33,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-18 09:14:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:33,707 INFO L225 Difference]: With dead ends: 1794 [2018-11-18 09:14:33,707 INFO L226 Difference]: Without dead ends: 1321 [2018-11-18 09:14:33,708 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2018-11-18 09:14:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1315. [2018-11-18 09:14:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2018-11-18 09:14:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1764 transitions. [2018-11-18 09:14:33,759 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1764 transitions. Word has length 60 [2018-11-18 09:14:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:33,759 INFO L480 AbstractCegarLoop]: Abstraction has 1315 states and 1764 transitions. [2018-11-18 09:14:33,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:14:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1764 transitions. [2018-11-18 09:14:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-18 09:14:33,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:33,763 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:33,763 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:33,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -233851601, now seen corresponding path program 1 times [2018-11-18 09:14:33,763 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:33,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:33,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:33,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:33,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 09:14:33,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:14:33,895 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 [2018-11-18 09:14:33,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:33,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:14:34,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:14:34,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 15 [2018-11-18 09:14:34,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 09:14:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 09:14:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-11-18 09:14:34,270 INFO L87 Difference]: Start difference. First operand 1315 states and 1764 transitions. Second operand 15 states. [2018-11-18 09:14:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:36,006 INFO L93 Difference]: Finished difference Result 3181 states and 4252 transitions. [2018-11-18 09:14:36,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 09:14:36,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-11-18 09:14:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:36,018 INFO L225 Difference]: With dead ends: 3181 [2018-11-18 09:14:36,019 INFO L226 Difference]: Without dead ends: 1840 [2018-11-18 09:14:36,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2018-11-18 09:14:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2018-11-18 09:14:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1433. [2018-11-18 09:14:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2018-11-18 09:14:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1863 transitions. [2018-11-18 09:14:36,067 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1863 transitions. Word has length 61 [2018-11-18 09:14:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:36,069 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 1863 transitions. [2018-11-18 09:14:36,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 09:14:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1863 transitions. [2018-11-18 09:14:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 09:14:36,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:36,071 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:36,071 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:36,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -720408370, now seen corresponding path program 1 times [2018-11-18 09:14:36,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:36,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:36,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:36,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:36,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:14:36,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:36,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 09:14:36,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:14:36,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:14:36,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:14:36,191 INFO L87 Difference]: Start difference. First operand 1433 states and 1863 transitions. Second operand 9 states. [2018-11-18 09:14:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:37,031 INFO L93 Difference]: Finished difference Result 3242 states and 4248 transitions. [2018-11-18 09:14:37,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:14:37,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2018-11-18 09:14:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:37,037 INFO L225 Difference]: With dead ends: 3242 [2018-11-18 09:14:37,037 INFO L226 Difference]: Without dead ends: 2028 [2018-11-18 09:14:37,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-18 09:14:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2018-11-18 09:14:37,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1702. [2018-11-18 09:14:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2018-11-18 09:14:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2179 transitions. [2018-11-18 09:14:37,102 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2179 transitions. Word has length 62 [2018-11-18 09:14:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:37,102 INFO L480 AbstractCegarLoop]: Abstraction has 1702 states and 2179 transitions. [2018-11-18 09:14:37,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:14:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2179 transitions. [2018-11-18 09:14:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 09:14:37,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:37,104 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:37,104 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:37,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:37,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1760043162, now seen corresponding path program 1 times [2018-11-18 09:14:37,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:14:37,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:14:37,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:37,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:37,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:14:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:14:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:14:37,170 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:14:37,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:14:37 BoogieIcfgContainer [2018-11-18 09:14:37,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:14:37,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:14:37,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:14:37,237 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:14:37,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:27" (3/4) ... [2018-11-18 09:14:37,242 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:14:37,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:14:37,244 INFO L168 Benchmark]: Toolchain (without parser) took 10744.19 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 307.8 MB). Free memory was 961.1 MB in the beginning and 1.3 GB in the end (delta: -318.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:14:37,244 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:14:37,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 945.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:14:37,245 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:14:37,246 INFO L168 Benchmark]: RCFGBuilder took 407.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:14:37,246 INFO L168 Benchmark]: TraceAbstraction took 10082.13 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -180.0 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:14:37,247 INFO L168 Benchmark]: Witness Printer took 5.89 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:14:37,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 945.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 407.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10082.13 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -180.0 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.89 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L107] a = __VERIFIER_nondet_uint() [L108] b = __VERIFIER_nondet_uint() [L110] CALL, EXPR mp_add(a, b) VAL [\old(a)=0, \old(b)=0] [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=4] [L40] COND TRUE a3 == (unsigned char)0 [L41] na = na - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=3] [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=2] [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=1] [L49] nb = (unsigned char)4 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=1, nb=4] [L50] COND TRUE b3 == (unsigned char)0 [L51] nb = nb - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=1, nb=3] [L52] COND TRUE b2 == (unsigned char)0 [L53] nb = nb - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=1, nb=2] [L54] COND TRUE b1 == (unsigned char)0 [L55] nb = nb - 1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, na=1, nb=1] [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1] [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L64] COND TRUE i < na VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L66] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L67] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L68] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L70] COND TRUE i < nb VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L72] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L73] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L74] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L76] COND FALSE !(partial_sum > ((unsigned char)254)) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0, r0=0] [L81] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0, r0=0] [L82] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0, r0=0] [L83] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0, r0=0] [L85] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0] [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0] [L88] COND TRUE i < (unsigned char)4 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0] [L89] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0] [L90] COND TRUE i == (unsigned char)1 [L90] r1 = (unsigned char)0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L91] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L92] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L94] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L88] COND TRUE i < (unsigned char)4 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L89] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L90] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0] [L91] COND TRUE i == (unsigned char)2 [L91] r2 = (unsigned char)0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L92] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L94] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L88] COND TRUE i < (unsigned char)4 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L89] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L90] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L91] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0] [L92] COND TRUE i == (unsigned char)3 [L92] r3 = (unsigned char)0 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0, r3=0] [L94] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0, r3=0] [L88] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=0, \old(b)=0, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=0, r0=0, r1=0, r2=0, r3=0] [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] RET return r; VAL [\old(a)=0, \old(b)=0, \result=1, a=0, a0=0, a1=0, a2=0, a3=0, b=0, b0=0, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=0, r=1, r0=0, r1=0, r2=0, r3=0] [L110] EXPR mp_add(a, b) VAL [a=0, b=0, mp_add(a, b)=1] [L110] r = mp_add(a, b) [L112] CALL __VERIFIER_assert(r == a + b) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 56 locations, 1 error locations. UNSAFE Result, 10.0s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 7.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1158 SDtfs, 2766 SDslu, 2924 SDs, 0 SdLazy, 5357 SolverSat, 482 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 125 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1702occurred in iteration=13, 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1915 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 764 NumberOfCodeBlocks, 764 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 683 ConstructedInterpolants, 16 QuantifiedInterpolants, 135532 SizeOfPredicates, 3 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 380/387 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 09:14:38,978 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:14:38,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:14:38,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:14:38,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:14:38,988 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:14:38,989 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:14:38,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:14:38,991 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:14:38,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:14:38,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:14:38,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:14:38,993 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:14:38,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:14:38,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:14:38,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:14:38,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:14:38,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:14:38,997 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:14:38,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:14:38,999 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:14:39,000 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:14:39,002 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:14:39,003 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:14:39,003 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:14:39,003 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:14:39,004 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:14:39,005 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:14:39,005 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:14:39,006 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:14:39,006 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:14:39,007 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:14:39,007 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:14:39,007 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:14:39,008 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:14:39,008 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:14:39,009 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 09:14:39,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:14:39,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:14:39,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:14:39,019 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:14:39,019 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:14:39,019 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:14:39,019 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:14:39,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:14:39,020 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:14:39,021 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:14:39,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:14:39,021 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:14:39,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:14:39,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:14:39,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:14:39,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:14:39,023 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:14:39,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:14:39,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:14:39,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:14:39,024 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:14:39,025 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 09:14:39,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:14:39,025 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:14:39,025 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:14:39,026 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_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 -> a2c46755d0cb80f6b2e7b990e0a1bd9a49737b84 [2018-11-18 09:14:39,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:14:39,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:14:39,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:14:39,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:14:39,086 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:14:39,086 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:39,133 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/ff807f4cb/7d76134c21694eefb8822815d506bf15/FLAG1a83b205f [2018-11-18 09:14:39,480 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:14:39,480 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/sv-benchmarks/c/bitvector/byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:39,485 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/ff807f4cb/7d76134c21694eefb8822815d506bf15/FLAG1a83b205f [2018-11-18 09:14:39,494 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/data/ff807f4cb/7d76134c21694eefb8822815d506bf15 [2018-11-18 09:14:39,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:14:39,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:14:39,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:14:39,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:14:39,504 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:14:39,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3525bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39, skipping insertion in model container [2018-11-18 09:14:39,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:14:39,531 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:14:39,696 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:14:39,701 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:14:39,729 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:14:39,740 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:14:39,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39 WrapperNode [2018-11-18 09:14:39,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:14:39,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:14:39,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:14:39,742 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:14:39,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... [2018-11-18 09:14:39,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:14:39,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:14:39,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:14:39,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:14:39,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/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 [2018-11-18 09:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 09:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2018-11-18 09:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-18 09:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2018-11-18 09:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2018-11-18 09:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2018-11-18 09:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2018-11-18 09:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:14:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:14:40,210 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:14:40,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:40 BoogieIcfgContainer [2018-11-18 09:14:40,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:14:40,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:14:40,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:14:40,213 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:14:40,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:14:39" (1/3) ... [2018-11-18 09:14:40,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:40, skipping insertion in model container [2018-11-18 09:14:40,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:39" (2/3) ... [2018-11-18 09:14:40,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:40, skipping insertion in model container [2018-11-18 09:14:40,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:40" (3/3) ... [2018-11-18 09:14:40,216 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_false-unreach-call_true-no-overflow_true-termination.i [2018-11-18 09:14:40,222 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:14:40,228 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:14:40,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:14:40,268 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:14:40,269 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:14:40,269 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:14:40,269 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:14:40,269 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:14:40,269 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:14:40,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:14:40,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:14:40,270 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:14:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-11-18 09:14:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 09:14:40,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:40,291 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:40,293 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:40,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -486194587, now seen corresponding path program 1 times [2018-11-18 09:14:40,300 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:40,300 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:40,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:40,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:40,370 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Stream closed [2018-11-18 09:14:40,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:40,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:14:40,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:14:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:14:40,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:14:40,391 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2018-11-18 09:14:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:40,407 INFO L93 Difference]: Finished difference Result 79 states and 115 transitions. [2018-11-18 09:14:40,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:14:40,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 09:14:40,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:40,415 INFO L225 Difference]: With dead ends: 79 [2018-11-18 09:14:40,415 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 09:14:40,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:14:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 09:14:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 09:14:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 09:14:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2018-11-18 09:14:40,446 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 21 [2018-11-18 09:14:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:40,446 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2018-11-18 09:14:40,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:14:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2018-11-18 09:14:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 09:14:40,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:40,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:40,448 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:40,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:40,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1212978296, now seen corresponding path program 1 times [2018-11-18 09:14:40,449 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:40,449 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:40,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:40,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:40,625 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:40,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:40,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:14:40,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:14:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:14:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:40,631 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand 4 states. [2018-11-18 09:14:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:40,988 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2018-11-18 09:14:40,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:14:40,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 09:14:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:40,992 INFO L225 Difference]: With dead ends: 138 [2018-11-18 09:14:40,992 INFO L226 Difference]: Without dead ends: 104 [2018-11-18 09:14:40,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-18 09:14:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2018-11-18 09:14:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-18 09:14:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 151 transitions. [2018-11-18 09:14:41,007 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 151 transitions. Word has length 23 [2018-11-18 09:14:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:41,007 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 151 transitions. [2018-11-18 09:14:41,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:14:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 151 transitions. [2018-11-18 09:14:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 09:14:41,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:41,009 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:41,010 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:41,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1536350606, now seen corresponding path program 1 times [2018-11-18 09:14:41,011 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:41,011 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:41,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:41,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:41,113 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:41,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:41,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:14:41,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:14:41,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:14:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:41,116 INFO L87 Difference]: Start difference. First operand 99 states and 151 transitions. Second operand 5 states. [2018-11-18 09:14:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:41,551 INFO L93 Difference]: Finished difference Result 191 states and 306 transitions. [2018-11-18 09:14:41,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:14:41,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-18 09:14:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:41,553 INFO L225 Difference]: With dead ends: 191 [2018-11-18 09:14:41,553 INFO L226 Difference]: Without dead ends: 157 [2018-11-18 09:14:41,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-18 09:14:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 99. [2018-11-18 09:14:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-18 09:14:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 151 transitions. [2018-11-18 09:14:41,562 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 151 transitions. Word has length 24 [2018-11-18 09:14:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:41,563 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 151 transitions. [2018-11-18 09:14:41,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:14:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 151 transitions. [2018-11-18 09:14:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 09:14:41,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:41,564 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:41,564 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:41,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash -888363149, now seen corresponding path program 1 times [2018-11-18 09:14:41,565 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:41,565 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:41,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:41,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:41,645 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:41,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:41,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 09:14:41,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 09:14:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:14:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:41,651 INFO L87 Difference]: Start difference. First operand 99 states and 151 transitions. Second operand 7 states. [2018-11-18 09:14:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:42,106 INFO L93 Difference]: Finished difference Result 240 states and 377 transitions. [2018-11-18 09:14:42,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:14:42,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-18 09:14:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:42,110 INFO L225 Difference]: With dead ends: 240 [2018-11-18 09:14:42,110 INFO L226 Difference]: Without dead ends: 206 [2018-11-18 09:14:42,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-11-18 09:14:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 135. [2018-11-18 09:14:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-18 09:14:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 204 transitions. [2018-11-18 09:14:42,125 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 204 transitions. Word has length 25 [2018-11-18 09:14:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:42,126 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 204 transitions. [2018-11-18 09:14:42,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 09:14:42,126 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 204 transitions. [2018-11-18 09:14:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 09:14:42,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:42,127 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:42,127 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:42,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1909431503, now seen corresponding path program 1 times [2018-11-18 09:14:42,127 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:42,127 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:42,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:42,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:42,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:42,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:42,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:14:42,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:14:42,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:14:42,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:42,213 INFO L87 Difference]: Start difference. First operand 135 states and 204 transitions. Second operand 6 states. [2018-11-18 09:14:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:42,405 INFO L93 Difference]: Finished difference Result 260 states and 399 transitions. [2018-11-18 09:14:42,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:14:42,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-18 09:14:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:42,407 INFO L225 Difference]: With dead ends: 260 [2018-11-18 09:14:42,407 INFO L226 Difference]: Without dead ends: 226 [2018-11-18 09:14:42,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-11-18 09:14:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 105. [2018-11-18 09:14:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-11-18 09:14:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2018-11-18 09:14:42,415 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 25 [2018-11-18 09:14:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:42,416 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2018-11-18 09:14:42,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:14:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2018-11-18 09:14:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 09:14:42,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:42,418 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:42,418 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:42,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 90534596, now seen corresponding path program 1 times [2018-11-18 09:14:42,419 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:42,419 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:42,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:42,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:42,487 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:42,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:42,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:14:42,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:14:42,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:14:42,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:42,494 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand 4 states. [2018-11-18 09:14:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:42,665 INFO L93 Difference]: Finished difference Result 268 states and 386 transitions. [2018-11-18 09:14:42,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:14:42,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-18 09:14:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:42,666 INFO L225 Difference]: With dead ends: 268 [2018-11-18 09:14:42,667 INFO L226 Difference]: Without dead ends: 190 [2018-11-18 09:14:42,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:14:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-18 09:14:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2018-11-18 09:14:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-11-18 09:14:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 248 transitions. [2018-11-18 09:14:42,681 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 248 transitions. Word has length 37 [2018-11-18 09:14:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:42,681 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 248 transitions. [2018-11-18 09:14:42,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:14:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 248 transitions. [2018-11-18 09:14:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 09:14:42,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:42,683 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:42,683 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:42,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash 431468861, now seen corresponding path program 1 times [2018-11-18 09:14:42,683 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:42,684 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:42,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:42,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:42,755 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:42,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:42,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:14:42,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:14:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:14:42,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:42,757 INFO L87 Difference]: Start difference. First operand 173 states and 248 transitions. Second operand 5 states. [2018-11-18 09:14:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:42,895 INFO L93 Difference]: Finished difference Result 349 states and 502 transitions. [2018-11-18 09:14:42,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:14:42,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-18 09:14:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:42,896 INFO L225 Difference]: With dead ends: 349 [2018-11-18 09:14:42,896 INFO L226 Difference]: Without dead ends: 271 [2018-11-18 09:14:42,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:14:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-11-18 09:14:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 173. [2018-11-18 09:14:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-11-18 09:14:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 248 transitions. [2018-11-18 09:14:42,917 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 248 transitions. Word has length 38 [2018-11-18 09:14:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:42,918 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 248 transitions. [2018-11-18 09:14:42,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:14:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 248 transitions. [2018-11-18 09:14:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 09:14:42,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:42,919 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:42,919 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:42,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash -747145201, now seen corresponding path program 1 times [2018-11-18 09:14:42,920 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:42,920 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:42,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:42,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:43,028 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:43,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:43,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 09:14:43,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 09:14:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:14:43,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:43,031 INFO L87 Difference]: Start difference. First operand 173 states and 248 transitions. Second operand 7 states. [2018-11-18 09:14:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:43,258 INFO L93 Difference]: Finished difference Result 424 states and 606 transitions. [2018-11-18 09:14:43,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:14:43,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-11-18 09:14:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:43,260 INFO L225 Difference]: With dead ends: 424 [2018-11-18 09:14:43,260 INFO L226 Difference]: Without dead ends: 346 [2018-11-18 09:14:43,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-11-18 09:14:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 233. [2018-11-18 09:14:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-11-18 09:14:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 330 transitions. [2018-11-18 09:14:43,273 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 330 transitions. Word has length 39 [2018-11-18 09:14:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:43,274 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 330 transitions. [2018-11-18 09:14:43,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 09:14:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 330 transitions. [2018-11-18 09:14:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 09:14:43,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:43,275 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:43,275 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:43,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1256618291, now seen corresponding path program 1 times [2018-11-18 09:14:43,276 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:43,276 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:43,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:43,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:43,355 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:14:43,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:14:43,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:14:43,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:14:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:14:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:43,357 INFO L87 Difference]: Start difference. First operand 233 states and 330 transitions. Second operand 6 states. [2018-11-18 09:14:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:43,457 INFO L93 Difference]: Finished difference Result 422 states and 600 transitions. [2018-11-18 09:14:43,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:14:43,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-18 09:14:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:43,458 INFO L225 Difference]: With dead ends: 422 [2018-11-18 09:14:43,458 INFO L226 Difference]: Without dead ends: 344 [2018-11-18 09:14:43,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-11-18 09:14:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 165. [2018-11-18 09:14:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-18 09:14:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 230 transitions. [2018-11-18 09:14:43,465 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 230 transitions. Word has length 39 [2018-11-18 09:14:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:43,465 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 230 transitions. [2018-11-18 09:14:43,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:14:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 230 transitions. [2018-11-18 09:14:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 09:14:43,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:43,467 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:43,467 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:43,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -459438472, now seen corresponding path program 1 times [2018-11-18 09:14:43,467 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:43,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:43,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:43,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:43,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:14:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:43,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:14:43,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 09:14:43,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:14:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:14:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:14:43,577 INFO L87 Difference]: Start difference. First operand 165 states and 230 transitions. Second operand 8 states. [2018-11-18 09:14:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:44,095 INFO L93 Difference]: Finished difference Result 594 states and 879 transitions. [2018-11-18 09:14:44,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:14:44,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-11-18 09:14:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:44,097 INFO L225 Difference]: With dead ends: 594 [2018-11-18 09:14:44,097 INFO L226 Difference]: Without dead ends: 516 [2018-11-18 09:14:44,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:14:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-11-18 09:14:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 426. [2018-11-18 09:14:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-11-18 09:14:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 597 transitions. [2018-11-18 09:14:44,121 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 597 transitions. Word has length 41 [2018-11-18 09:14:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:44,121 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 597 transitions. [2018-11-18 09:14:44,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:14:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 597 transitions. [2018-11-18 09:14:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 09:14:44,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:44,123 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:44,123 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:44,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1134935459, now seen corresponding path program 1 times [2018-11-18 09:14:44,123 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:44,123 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:44,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:44,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:44,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:14:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:44,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:14:44,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 09:14:44,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:14:44,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:14:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:14:44,274 INFO L87 Difference]: Start difference. First operand 426 states and 597 transitions. Second operand 8 states. [2018-11-18 09:14:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:45,503 INFO L93 Difference]: Finished difference Result 1359 states and 1989 transitions. [2018-11-18 09:14:45,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:14:45,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2018-11-18 09:14:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:45,507 INFO L225 Difference]: With dead ends: 1359 [2018-11-18 09:14:45,507 INFO L226 Difference]: Without dead ends: 1140 [2018-11-18 09:14:45,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:14:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2018-11-18 09:14:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 950. [2018-11-18 09:14:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-11-18 09:14:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1344 transitions. [2018-11-18 09:14:45,557 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1344 transitions. Word has length 43 [2018-11-18 09:14:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:45,558 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 1344 transitions. [2018-11-18 09:14:45,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:14:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1344 transitions. [2018-11-18 09:14:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 09:14:45,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:45,559 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:45,560 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:45,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:45,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1646069422, now seen corresponding path program 1 times [2018-11-18 09:14:45,560 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:45,560 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:45,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:45,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:45,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:14:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:14:45,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:14:45,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 09:14:45,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:14:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:14:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:14:45,856 INFO L87 Difference]: Start difference. First operand 950 states and 1344 transitions. Second operand 6 states. [2018-11-18 09:14:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:14:46,509 INFO L93 Difference]: Finished difference Result 1749 states and 2641 transitions. [2018-11-18 09:14:46,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:14:46,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-11-18 09:14:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:14:46,516 INFO L225 Difference]: With dead ends: 1749 [2018-11-18 09:14:46,516 INFO L226 Difference]: Without dead ends: 1456 [2018-11-18 09:14:46,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:14:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-18 09:14:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1266. [2018-11-18 09:14:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2018-11-18 09:14:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1856 transitions. [2018-11-18 09:14:46,570 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1856 transitions. Word has length 45 [2018-11-18 09:14:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:14:46,571 INFO L480 AbstractCegarLoop]: Abstraction has 1266 states and 1856 transitions. [2018-11-18 09:14:46,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:14:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1856 transitions. [2018-11-18 09:14:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 09:14:46,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:14:46,573 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:14:46,574 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:14:46,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:14:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1760043162, now seen corresponding path program 1 times [2018-11-18 09:14:46,575 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:14:46,575 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:14:46,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:14:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:14:46,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:14:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 09:14:47,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:14:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 09:14:50,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:14:50,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2018-11-18 09:14:50,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 09:14:50,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 09:14:50,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 09:14:50,642 INFO L87 Difference]: Start difference. First operand 1266 states and 1856 transitions. Second operand 44 states. [2018-11-18 09:15:03,620 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-11-18 09:15:10,011 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2018-11-18 09:15:12,360 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-11-18 09:15:13,428 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2018-11-18 09:15:17,589 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-11-18 09:15:18,351 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-11-18 09:15:19,594 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2018-11-18 09:15:21,119 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-11-18 09:15:21,484 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-11-18 09:15:22,273 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2018-11-18 09:15:23,076 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2018-11-18 09:15:24,305 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2018-11-18 09:15:25,149 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2018-11-18 09:15:25,782 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2018-11-18 09:15:29,602 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-11-18 09:15:30,704 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2018-11-18 09:15:31,409 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2018-11-18 09:15:31,858 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2018-11-18 09:15:32,761 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-11-18 09:15:33,303 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-11-18 09:15:33,963 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2018-11-18 09:15:34,573 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-11-18 09:15:35,008 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2018-11-18 09:15:35,681 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-11-18 09:15:36,253 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 107 [2018-11-18 09:15:36,724 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-11-18 09:15:37,474 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-11-18 09:15:37,923 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 103 [2018-11-18 09:15:38,901 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-18 09:15:40,432 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-11-18 09:15:41,481 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2018-11-18 09:15:43,105 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-11-18 09:15:43,610 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-11-18 09:15:44,339 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-11-18 09:15:45,533 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2018-11-18 09:15:45,975 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-11-18 09:15:46,855 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2018-11-18 09:15:48,299 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2018-11-18 09:15:48,746 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2018-11-18 09:15:50,096 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-11-18 09:15:51,069 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2018-11-18 09:15:51,664 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-11-18 09:15:53,987 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 99 [2018-11-18 09:15:54,745 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2018-11-18 09:15:56,597 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-11-18 09:15:57,066 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 110 [2018-11-18 09:15:58,123 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-11-18 09:15:59,978 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2018-11-18 09:16:00,383 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2018-11-18 09:16:00,866 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2018-11-18 09:16:01,370 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-11-18 09:16:02,179 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2018-11-18 09:16:03,039 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-11-18 09:16:04,076 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 115 [2018-11-18 09:16:05,028 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2018-11-18 09:16:05,607 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 102 [2018-11-18 09:16:06,179 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-11-18 09:16:06,642 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2018-11-18 09:16:07,232 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2018-11-18 09:16:07,738 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2018-11-18 09:16:08,582 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-11-18 09:16:09,534 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2018-11-18 09:16:10,116 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2018-11-18 09:16:11,507 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2018-11-18 09:16:12,323 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2018-11-18 09:16:12,987 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2018-11-18 09:16:14,603 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 118 [2018-11-18 09:16:15,076 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-11-18 09:16:16,012 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2018-11-18 09:16:16,890 WARN L180 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 96 [2018-11-18 09:16:18,410 WARN L180 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 116 [2018-11-18 09:16:18,760 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2018-11-18 09:16:19,178 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2018-11-18 09:16:20,135 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 120 [2018-11-18 09:16:21,256 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2018-11-18 09:16:22,151 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-11-18 09:16:22,967 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-11-18 09:16:23,605 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-11-18 09:16:24,493 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-11-18 09:16:25,092 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2018-11-18 09:16:26,696 WARN L180 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 118 [2018-11-18 09:16:27,346 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2018-11-18 09:16:29,085 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2018-11-18 09:16:30,018 WARN L180 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 123 [2018-11-18 09:16:30,787 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2018-11-18 09:16:31,513 WARN L180 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2018-11-18 09:16:32,195 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2018-11-18 09:16:33,092 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-11-18 09:16:33,670 WARN L180 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2018-11-18 09:16:34,477 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2018-11-18 09:16:35,732 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2018-11-18 09:16:36,581 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 122 [2018-11-18 09:16:37,049 WARN L180 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-11-18 09:16:37,563 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2018-11-18 09:16:38,207 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2018-11-18 09:16:39,133 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2018-11-18 09:16:39,923 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2018-11-18 09:16:41,110 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-11-18 09:16:42,121 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2018-11-18 09:16:42,784 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2018-11-18 09:16:43,587 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-11-18 09:16:44,457 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 117 [2018-11-18 09:16:45,736 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2018-11-18 09:16:46,496 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 102 [2018-11-18 09:16:47,604 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-11-18 09:16:48,311 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 108 [2018-11-18 09:16:50,032 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2018-11-18 09:16:50,604 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2018-11-18 09:16:51,588 WARN L180 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 114 [2018-11-18 09:16:52,438 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 120 [2018-11-18 09:16:53,746 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2018-11-18 09:16:55,004 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 98 [2018-11-18 09:16:56,089 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 116 [2018-11-18 09:16:56,876 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 122 [2018-11-18 09:16:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:56,945 INFO L93 Difference]: Finished difference Result 11117 states and 16413 transitions. [2018-11-18 09:16:56,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2018-11-18 09:16:56,946 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 66 [2018-11-18 09:16:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:56,972 INFO L225 Difference]: With dead ends: 11117 [2018-11-18 09:16:56,972 INFO L226 Difference]: Without dead ends: 10912 [2018-11-18 09:16:56,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39893 ImplicationChecksByTransitivity, 107.3s TimeCoverageRelationStatistics Valid=21910, Invalid=84692, Unknown=0, NotChecked=0, Total=106602 [2018-11-18 09:16:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2018-11-18 09:16:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 4595. [2018-11-18 09:16:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4595 states. [2018-11-18 09:16:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4595 states to 4595 states and 6961 transitions. [2018-11-18 09:16:57,290 INFO L78 Accepts]: Start accepts. Automaton has 4595 states and 6961 transitions. Word has length 66 [2018-11-18 09:16:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:57,290 INFO L480 AbstractCegarLoop]: Abstraction has 4595 states and 6961 transitions. [2018-11-18 09:16:57,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 09:16:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4595 states and 6961 transitions. [2018-11-18 09:16:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 09:16:57,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:57,293 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:57,293 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:57,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash 942394712, now seen corresponding path program 1 times [2018-11-18 09:16:57,296 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:16:57,296 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:16:57,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:57,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:16:57,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:16:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:16:57,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:16:57,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-11-18 09:16:57,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:16:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:16:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:16:57,443 INFO L87 Difference]: Start difference. First operand 4595 states and 6961 transitions. Second operand 8 states. [2018-11-18 09:16:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:58,544 INFO L93 Difference]: Finished difference Result 10352 states and 15745 transitions. [2018-11-18 09:16:58,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 09:16:58,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2018-11-18 09:16:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:58,556 INFO L225 Difference]: With dead ends: 10352 [2018-11-18 09:16:58,556 INFO L226 Difference]: Without dead ends: 5838 [2018-11-18 09:16:58,563 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:16:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2018-11-18 09:16:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 4999. [2018-11-18 09:16:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4999 states. [2018-11-18 09:16:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 7364 transitions. [2018-11-18 09:16:58,818 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 7364 transitions. Word has length 66 [2018-11-18 09:16:58,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:58,818 INFO L480 AbstractCegarLoop]: Abstraction has 4999 states and 7364 transitions. [2018-11-18 09:16:58,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:16:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 7364 transitions. [2018-11-18 09:16:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 09:16:58,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:58,820 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:58,821 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:58,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash -689556968, now seen corresponding path program 1 times [2018-11-18 09:16:58,822 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:16:58,822 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:16:58,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:58,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:16:58,892 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:16:58,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:16:58,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:16:58,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:16:58,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:16:58,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:16:58,895 INFO L87 Difference]: Start difference. First operand 4999 states and 7364 transitions. Second operand 3 states. [2018-11-18 09:16:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:59,066 INFO L93 Difference]: Finished difference Result 5977 states and 8575 transitions. [2018-11-18 09:16:59,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:16:59,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-18 09:16:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:59,078 INFO L225 Difference]: With dead ends: 5977 [2018-11-18 09:16:59,078 INFO L226 Difference]: Without dead ends: 5909 [2018-11-18 09:16:59,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:16:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2018-11-18 09:16:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 5342. [2018-11-18 09:16:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5342 states. [2018-11-18 09:16:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 7817 transitions. [2018-11-18 09:16:59,315 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 7817 transitions. Word has length 66 [2018-11-18 09:16:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:59,315 INFO L480 AbstractCegarLoop]: Abstraction has 5342 states and 7817 transitions. [2018-11-18 09:16:59,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:16:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 7817 transitions. [2018-11-18 09:16:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 09:16:59,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:59,318 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:59,318 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:59,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2091023460, now seen corresponding path program 1 times [2018-11-18 09:16:59,319 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:16:59,319 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:16:59,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:59,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:16:59,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:16:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:16:59,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:16:59,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 09:16:59,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:16:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:16:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:16:59,585 INFO L87 Difference]: Start difference. First operand 5342 states and 7817 transitions. Second operand 12 states. [2018-11-18 09:17:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:17:00,241 INFO L93 Difference]: Finished difference Result 9141 states and 13413 transitions. [2018-11-18 09:17:00,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 09:17:00,241 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-11-18 09:17:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:17:00,253 INFO L225 Difference]: With dead ends: 9141 [2018-11-18 09:17:00,253 INFO L226 Difference]: Without dead ends: 6343 [2018-11-18 09:17:00,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-11-18 09:17:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2018-11-18 09:17:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5466. [2018-11-18 09:17:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5466 states. [2018-11-18 09:17:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 7836 transitions. [2018-11-18 09:17:00,442 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 7836 transitions. Word has length 66 [2018-11-18 09:17:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:17:00,442 INFO L480 AbstractCegarLoop]: Abstraction has 5466 states and 7836 transitions. [2018-11-18 09:17:00,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:17:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 7836 transitions. [2018-11-18 09:17:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-18 09:17:00,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:17:00,444 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:17:00,444 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:17:00,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:17:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1119117464, now seen corresponding path program 1 times [2018-11-18 09:17:00,447 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:17:00,447 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:17:00,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:17:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:17:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:17:00,597 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:17:00,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:17:00 BoogieIcfgContainer [2018-11-18 09:17:00,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:17:00,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:17:00,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:17:00,647 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:17:00,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:40" (3/4) ... [2018-11-18 09:17:00,649 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 09:17:00,729 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f17c704c-6970-4b99-aa8e-0ed4e3566d83/bin-2019/uautomizer/witness.graphml [2018-11-18 09:17:00,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:17:00,730 INFO L168 Benchmark]: Toolchain (without parser) took 141232.98 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 374.9 MB). Free memory was 951.9 MB in the beginning and 807.2 MB in the end (delta: 144.6 MB). Peak memory consumption was 519.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:17:00,731 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:17:00,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:17:00,732 INFO L168 Benchmark]: Boogie Preprocessor took 37.66 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:17:00,733 INFO L168 Benchmark]: RCFGBuilder took 431.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:17:00,733 INFO L168 Benchmark]: TraceAbstraction took 140434.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 214.4 MB). Free memory was 1.1 GB in the beginning and 818.2 MB in the end (delta: 308.5 MB). Peak memory consumption was 522.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:17:00,733 INFO L168 Benchmark]: Witness Printer took 83.12 ms. Allocated memory is still 1.4 GB. Free memory was 818.2 MB in the beginning and 807.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:17:00,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.66 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 431.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 140434.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 214.4 MB). Free memory was 1.1 GB in the beginning and 818.2 MB in the end (delta: 308.5 MB). Peak memory consumption was 522.9 MB. Max. memory is 11.5 GB. * Witness Printer took 83.12 ms. Allocated memory is still 1.4 GB. Free memory was 818.2 MB in the beginning and 807.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L105] unsigned int a, b, r; [L107] a = __VERIFIER_nondet_uint() [L108] b = __VERIFIER_nondet_uint() [L110] CALL, EXPR mp_add(a, b) VAL [\old(a)=149, \old(b)=106] [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=4] [L40] COND TRUE a3 == (unsigned char)0 [L41] na = na - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=3] [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=2] [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=1] [L49] nb = (unsigned char)4 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=1, nb=4] [L50] COND TRUE b3 == (unsigned char)0 [L51] nb = nb - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=1, nb=3] [L52] COND TRUE b2 == (unsigned char)0 [L53] nb = nb - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=1, nb=2] [L54] COND TRUE b1 == (unsigned char)0 [L55] nb = nb - 1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, na=1, nb=1] [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1] [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L64] COND TRUE i < na VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=149] [L66] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=149] [L67] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=149] [L68] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=149] [L70] COND TRUE i < nb VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=149] [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L72] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L73] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L74] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L76] COND TRUE partial_sum > ((unsigned char)254) [L77] partial_sum = partial_sum & ((unsigned char)255) [L78] carry = (unsigned short)1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255] [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L81] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L82] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L83] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L85] i = i + (unsigned char)1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=1, i=1, na=1, nb=1, partial_sum=255, r0=-1] [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L64] COND FALSE !(i < na) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L70] COND FALSE !(i < nb) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L76] COND FALSE !(partial_sum > ((unsigned char)254)) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L80] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L82] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L83] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L85] i = i + (unsigned char)1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L88] COND TRUE i < (unsigned char)4 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L89] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L90] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L91] COND TRUE i == (unsigned char)2 [L91] r2 = (unsigned char)0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L92] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L94] i = i + (unsigned char)1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L88] COND TRUE i < (unsigned char)4 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L89] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L90] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L91] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L92] COND TRUE i == (unsigned char)3 [L92] r3 = (unsigned char)0 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L94] i = i + (unsigned char)1 VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L88] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=149, \old(b)=106, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] RET return r; VAL [\old(a)=149, \old(b)=106, \result=511, a=149, a0=-107, a1=0, a2=0, a3=0, b=106, b0=106, b1=0, b2=0, b3=0, carry=0, i=4, na=1, nb=1, partial_sum=1, r=511, r0=-1, r1=1, r2=0, r3=0] [L110] EXPR mp_add(a, b) VAL [a=149, b=106, mp_add(a, b)=511] [L110] r = mp_add(a, b) [L112] CALL __VERIFIER_assert(r == a + b) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 56 locations, 1 error locations. UNSAFE Result, 140.3s OverallTime, 17 OverallIterations, 4 TraceHistogramMax, 132.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1994 SDtfs, 6842 SDslu, 10315 SDs, 0 SdLazy, 16413 SolverSat, 1315 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1282 GetRequests, 868 SyntacticMatches, 4 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40005 ImplicationChecksByTransitivity, 108.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5466occurred in iteration=16, 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: 1.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 9732 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 733 NumberOfCodeBlocks, 733 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 969 ConstructedInterpolants, 0 QuantifiedInterpolants, 455084 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 164/223 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...