./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 440b8f87b993409470c921154676895cb2b74b47 .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 440b8f87b993409470c921154676895cb2b74b47 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-635dfa2 [2018-12-02 20:41:09,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:41:09,056 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:41:09,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:41:09,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:41:09,063 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:41:09,063 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:41:09,064 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:41:09,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:41:09,065 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:41:09,066 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:41:09,066 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:41:09,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:41:09,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:41:09,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:41:09,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:41:09,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:41:09,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:41:09,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:41:09,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:41:09,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:41:09,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:41:09,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:41:09,074 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:41:09,074 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:41:09,074 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:41:09,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:41:09,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:41:09,075 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:41:09,076 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:41:09,076 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:41:09,076 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:41:09,077 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:41:09,077 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:41:09,077 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:41:09,078 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:41:09,078 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 20:41:09,085 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:41:09,085 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:41:09,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 20:41:09,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 20:41:09,086 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 20:41:09,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 20:41:09,087 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 20:41:09,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:41:09,088 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 20:41:09,088 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 20:41:09,089 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:41:09,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 20:41:09,089 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 20:41:09,089 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 440b8f87b993409470c921154676895cb2b74b47 [2018-12-02 20:41:09,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:41:09,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:41:09,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:41:09,115 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:41:09,115 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:41:09,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_false-unreach-call.i [2018-12-02 20:41:09,149 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/5f8ed79a3/8b7078c816dc4d5a8bc301f2ff6355af/FLAGb796f60e7 [2018-12-02 20:41:09,554 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:41:09,555 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/sv-benchmarks/c/pthread/triangular_false-unreach-call.i [2018-12-02 20:41:09,561 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/5f8ed79a3/8b7078c816dc4d5a8bc301f2ff6355af/FLAGb796f60e7 [2018-12-02 20:41:09,908 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/5f8ed79a3/8b7078c816dc4d5a8bc301f2ff6355af [2018-12-02 20:41:09,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:41:09,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:41:09,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:41:09,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:41:09,930 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:41:09,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:41:09" (1/1) ... [2018-12-02 20:41:09,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75090e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:09, skipping insertion in model container [2018-12-02 20:41:09,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:41:09" (1/1) ... [2018-12-02 20:41:09,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:41:09,967 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:41:10,123 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:41:10,130 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:41:10,186 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:41:10,216 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:41:10,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10 WrapperNode [2018-12-02 20:41:10,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:41:10,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:41:10,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:41:10,217 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:41:10,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:41:10,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:41:10,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:41:10,243 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:41:10,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... [2018-12-02 20:41:10,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:41:10,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:41:10,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:41:10,258 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:41:10,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:41:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 20:41:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-02 20:41:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-02 20:41:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-02 20:41:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-02 20:41:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 20:41:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 20:41:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 20:41:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 20:41:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:41:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:41:10,296 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 20:41:10,445 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:41:10,445 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 20:41:10,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:41:10 BoogieIcfgContainer [2018-12-02 20:41:10,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:41:10,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:41:10,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:41:10,449 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:41:10,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:41:09" (1/3) ... [2018-12-02 20:41:10,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2180e0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:41:10, skipping insertion in model container [2018-12-02 20:41:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:10" (2/3) ... [2018-12-02 20:41:10,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2180e0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:41:10, skipping insertion in model container [2018-12-02 20:41:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:41:10" (3/3) ... [2018-12-02 20:41:10,452 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_false-unreach-call.i [2018-12-02 20:41:10,476 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,477 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,477 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,477 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,477 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,478 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,478 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,478 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,478 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,478 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,479 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,479 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,479 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,479 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,479 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,481 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,482 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:10,489 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 20:41:10,489 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:41:10,495 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 20:41:10,505 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 20:41:10,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:41:10,522 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 20:41:10,522 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:41:10,522 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:41:10,522 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:41:10,522 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:41:10,522 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:41:10,522 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:41:10,528 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-02 20:41:10,568 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-02 20:41:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-02 20:41:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 20:41:10,576 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:10,576 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:10,578 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:10,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-02 20:41:10,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:41:10,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:10,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,622 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:41:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:10,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:10,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:41:10,723 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:41:10,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:41:10,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:41:10,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:41:10,742 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-02 20:41:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:10,804 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-12-02 20:41:10,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 20:41:10,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 20:41:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:10,814 INFO L225 Difference]: With dead ends: 1411 [2018-12-02 20:41:10,814 INFO L226 Difference]: Without dead ends: 322 [2018-12-02 20:41:10,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-12-02 20:41:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-12-02 20:41:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-12-02 20:41:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-12-02 20:41:10,848 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-12-02 20:41:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:10,848 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-12-02 20:41:10,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:41:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-12-02 20:41:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 20:41:10,849 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:10,849 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:10,849 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:10,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -158111408, now seen corresponding path program 1 times [2018-12-02 20:41:10,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:41:10,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:10,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:41:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:10,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:10,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:41:10,900 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:41:10,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:41:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:41:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:41:10,901 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-12-02 20:41:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:10,927 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-12-02 20:41:10,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 20:41:10,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 20:41:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:10,929 INFO L225 Difference]: With dead ends: 411 [2018-12-02 20:41:10,929 INFO L226 Difference]: Without dead ends: 290 [2018-12-02 20:41:10,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-02 20:41:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-02 20:41:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-02 20:41:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-02 20:41:10,937 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-02 20:41:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:10,937 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-02 20:41:10,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:41:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-02 20:41:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 20:41:10,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:10,938 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:10,938 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:10,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:10,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1832836244, now seen corresponding path program 1 times [2018-12-02 20:41:10,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:41:10,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:10,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:10,941 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:41:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:10,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:10,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 20:41:10,985 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:41:10,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 20:41:10,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 20:41:10,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:10,986 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-02 20:41:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:11,018 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-02 20:41:11,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 20:41:11,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 20:41:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:11,019 INFO L225 Difference]: With dead ends: 437 [2018-12-02 20:41:11,019 INFO L226 Difference]: Without dead ends: 300 [2018-12-02 20:41:11,019 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:41:11,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-12-02 20:41:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 287. [2018-12-02 20:41:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-12-02 20:41:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 708 transitions. [2018-12-02 20:41:11,025 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 708 transitions. Word has length 25 [2018-12-02 20:41:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:11,026 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 708 transitions. [2018-12-02 20:41:11,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 20:41:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 708 transitions. [2018-12-02 20:41:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 20:41:11,026 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:11,026 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:11,026 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:11,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 2 times [2018-12-02 20:41:11,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:41:11,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:11,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:11,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:11,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:41:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:11,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:11,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 20:41:11,079 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:41:11,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 20:41:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 20:41:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:11,080 INFO L87 Difference]: Start difference. First operand 287 states and 708 transitions. Second operand 6 states. [2018-12-02 20:41:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:11,117 INFO L93 Difference]: Finished difference Result 447 states and 1077 transitions. [2018-12-02 20:41:11,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 20:41:11,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 20:41:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:11,118 INFO L225 Difference]: With dead ends: 447 [2018-12-02 20:41:11,119 INFO L226 Difference]: Without dead ends: 319 [2018-12-02 20:41:11,119 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:41:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-02 20:41:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-02 20:41:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 20:41:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-02 20:41:11,125 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-02 20:41:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:11,125 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-02 20:41:11,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 20:41:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-02 20:41:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 20:41:11,126 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:11,126 INFO L402 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] [2018-12-02 20:41:11,127 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:11,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -390066897, now seen corresponding path program 1 times [2018-12-02 20:41:11,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:41:11,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:11,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 20:41:11,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:41:11,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:41:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:11,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:41:11,171 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 20:41:11,172 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-02 20:41:11,174 INFO L168 Benchmark]: Toolchain (without parser) took 1259.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.6 MB in the beginning and 966.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:11,175 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:41:11,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:11,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:11,176 INFO L168 Benchmark]: Boogie Preprocessor took 15.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:41:11,176 INFO L168 Benchmark]: RCFGBuilder took 188.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:11,177 INFO L168 Benchmark]: TraceAbstraction took 727.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.0 MB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:11,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 188.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 727.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.0 MB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 20:41:12,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:41:12,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:41:12,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:41:12,566 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:41:12,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:41:12,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:41:12,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:41:12,569 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:41:12,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:41:12,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:41:12,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:41:12,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:41:12,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:41:12,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:41:12,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:41:12,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:41:12,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:41:12,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:41:12,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:41:12,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:41:12,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:41:12,577 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:41:12,577 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:41:12,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:41:12,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:41:12,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:41:12,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:41:12,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:41:12,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:41:12,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:41:12,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:41:12,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:41:12,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:41:12,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:41:12,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:41:12,582 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 20:41:12,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:41:12,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:41:12,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 20:41:12,590 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 20:41:12,590 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 20:41:12,591 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:41:12,591 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 20:41:12,591 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 20:41:12,591 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:41:12,591 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 20:41:12,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 20:41:12,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 20:41:12,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:41:12,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:41:12,593 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 20:41:12,594 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 20:41:12,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:41:12,594 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 20:41:12,594 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 20:41:12,594 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_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 440b8f87b993409470c921154676895cb2b74b47 [2018-12-02 20:41:12,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:41:12,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:41:12,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:41:12,629 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:41:12,629 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:41:12,630 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_false-unreach-call.i [2018-12-02 20:41:12,673 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/02030655f/a04804c39de04a2eb0e77cab1d67b21a/FLAGd2b57bd87 [2018-12-02 20:41:13,123 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:41:13,124 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/sv-benchmarks/c/pthread/triangular_false-unreach-call.i [2018-12-02 20:41:13,130 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/02030655f/a04804c39de04a2eb0e77cab1d67b21a/FLAGd2b57bd87 [2018-12-02 20:41:13,138 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/data/02030655f/a04804c39de04a2eb0e77cab1d67b21a [2018-12-02 20:41:13,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:41:13,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:41:13,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:41:13,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:41:13,143 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:41:13,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4eb40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13, skipping insertion in model container [2018-12-02 20:41:13,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:41:13,167 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:41:13,340 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:41:13,348 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:41:13,413 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:41:13,461 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:41:13,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13 WrapperNode [2018-12-02 20:41:13,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:41:13,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:41:13,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:41:13,462 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:41:13,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:41:13,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:41:13,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:41:13,488 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:41:13,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... [2018-12-02 20:41:13,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:41:13,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:41:13,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:41:13,505 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:41:13,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-02 20:41:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-02 20:41:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 20:41:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 20:41:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:41:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:41:13,538 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 20:41:13,700 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:41:13,700 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 20:41:13,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:41:13 BoogieIcfgContainer [2018-12-02 20:41:13,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:41:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:41:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:41:13,702 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:41:13,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:41:13" (1/3) ... [2018-12-02 20:41:13,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b513583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:41:13, skipping insertion in model container [2018-12-02 20:41:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:41:13" (2/3) ... [2018-12-02 20:41:13,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b513583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:41:13, skipping insertion in model container [2018-12-02 20:41:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:41:13" (3/3) ... [2018-12-02 20:41:13,704 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_false-unreach-call.i [2018-12-02 20:41:13,722 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,725 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,726 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,726 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,726 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,726 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:41:13,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 20:41:13,731 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:41:13,736 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 20:41:13,744 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 20:41:13,758 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 20:41:13,758 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:41:13,758 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 20:41:13,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:41:13,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:41:13,758 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:41:13,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:41:13,759 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:41:13,759 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:41:13,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-02 20:41:13,806 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-02 20:41:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-02 20:41:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 20:41:13,815 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:13,816 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:13,818 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:13,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-02 20:41:13,826 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:13,826 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:13,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:13,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:13,937 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:41:13,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:13,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:41:13,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:41:13,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:41:13,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:41:13,953 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-02 20:41:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:14,053 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-12-02 20:41:14,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 20:41:14,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 20:41:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:14,065 INFO L225 Difference]: With dead ends: 1777 [2018-12-02 20:41:14,065 INFO L226 Difference]: Without dead ends: 499 [2018-12-02 20:41:14,066 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 20:41:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-12-02 20:41:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-12-02 20:41:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-02 20:41:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-12-02 20:41:14,103 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-12-02 20:41:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:14,103 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-12-02 20:41:14,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:41:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-12-02 20:41:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 20:41:14,104 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:14,104 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:14,104 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:14,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-02 20:41:14,105 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:14,105 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:14,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:14,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,183 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:41:14,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:14,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:41:14,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:41:14,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:41:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:41:14,186 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-12-02 20:41:14,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:14,238 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-12-02 20:41:14,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 20:41:14,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 20:41:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:14,240 INFO L225 Difference]: With dead ends: 464 [2018-12-02 20:41:14,241 INFO L226 Difference]: Without dead ends: 343 [2018-12-02 20:41:14,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-12-02 20:41:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-12-02 20:41:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 20:41:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-12-02 20:41:14,250 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-12-02 20:41:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:14,250 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-12-02 20:41:14,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:41:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-12-02 20:41:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 20:41:14,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:14,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:14,251 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:14,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-12-02 20:41:14,251 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:14,251 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:14,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:14,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:41:14,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:14,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:41:14,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:41:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:41:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:41:14,337 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-12-02 20:41:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:14,376 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-12-02 20:41:14,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 20:41:14,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 20:41:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:14,377 INFO L225 Difference]: With dead ends: 420 [2018-12-02 20:41:14,377 INFO L226 Difference]: Without dead ends: 290 [2018-12-02 20:41:14,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-02 20:41:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-02 20:41:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-02 20:41:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-02 20:41:14,383 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-02 20:41:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:14,384 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-02 20:41:14,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:41:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-02 20:41:14,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 20:41:14,384 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:14,384 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:14,384 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:14,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-02 20:41:14,385 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:14,385 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:14,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:14,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,468 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:41:14,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:14,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 20:41:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 20:41:14,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 20:41:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:14,470 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-02 20:41:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:14,544 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-02 20:41:14,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 20:41:14,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 20:41:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:14,547 INFO L225 Difference]: With dead ends: 437 [2018-12-02 20:41:14,547 INFO L226 Difference]: Without dead ends: 309 [2018-12-02 20:41:14,547 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:41:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-02 20:41:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-02 20:41:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-02 20:41:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-02 20:41:14,552 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-02 20:41:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:14,552 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-02 20:41:14,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 20:41:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-02 20:41:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 20:41:14,553 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:14,554 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:14,554 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:14,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-02 20:41:14,554 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:14,555 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:14,571 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 20:41:14,604 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 20:41:14,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 20:41:14,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,640 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:41:14,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:41:14,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 20:41:14,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 20:41:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 20:41:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 20:41:14,642 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-02 20:41:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:14,713 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-02 20:41:14,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 20:41:14,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 20:41:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:14,715 INFO L225 Difference]: With dead ends: 456 [2018-12-02 20:41:14,715 INFO L226 Difference]: Without dead ends: 319 [2018-12-02 20:41:14,716 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:41:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-02 20:41:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-02 20:41:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 20:41:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-02 20:41:14,721 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-02 20:41:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:14,722 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-02 20:41:14,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 20:41:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-02 20:41:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 20:41:14,723 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:14,723 INFO L402 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] [2018-12-02 20:41:14,723 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:14,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-02 20:41:14,724 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:14,724 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:14,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 20:41:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:14,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,810 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:41:14,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 20:41:14,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:14,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:14,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:15,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 20:41:15,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-02 20:41:15,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 20:41:15,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 20:41:15,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-02 20:41:15,007 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-12-02 20:41:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:15,531 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-12-02 20:41:15,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-02 20:41:15,532 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-02 20:41:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:15,533 INFO L225 Difference]: With dead ends: 760 [2018-12-02 20:41:15,533 INFO L226 Difference]: Without dead ends: 383 [2018-12-02 20:41:15,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2018-12-02 20:41:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-12-02 20:41:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-12-02 20:41:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-12-02 20:41:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-12-02 20:41:15,542 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-12-02 20:41:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:15,543 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-12-02 20:41:15,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 20:41:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-12-02 20:41:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 20:41:15,543 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:15,544 INFO L402 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] [2018-12-02 20:41:15,544 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:15,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:15,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-12-02 20:41:15,544 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:15,545 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:15,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:15,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:15,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:15,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:41:15,759 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 20:41:15,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:15,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:15,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:41:15,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 20:41:15,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-02 20:41:15,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 20:41:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 20:41:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-02 20:41:15,822 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-12-02 20:41:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:16,364 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-12-02 20:41:16,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 20:41:16,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-02 20:41:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:16,367 INFO L225 Difference]: With dead ends: 824 [2018-12-02 20:41:16,367 INFO L226 Difference]: Without dead ends: 447 [2018-12-02 20:41:16,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-12-02 20:41:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-12-02 20:41:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-12-02 20:41:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-02 20:41:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-02 20:41:16,375 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-12-02 20:41:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:16,376 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-02 20:41:16,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 20:41:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-02 20:41:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 20:41:16,377 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:16,377 INFO L402 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] [2018-12-02 20:41:16,377 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:16,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-12-02 20:41:16,378 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:16,378 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:16,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:16,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 20:41:16,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 20:41:16,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:41:16,882 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 20:41:16,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:41:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:41:16,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:41:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 20:41:16,911 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 20:41:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 20:41:16,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 20:41:16,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-12-02 20:41:16,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 20:41:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 20:41:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-12-02 20:41:16,977 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-12-02 20:41:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:41:18,517 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-12-02 20:41:18,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-02 20:41:18,518 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-12-02 20:41:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:41:18,519 INFO L225 Difference]: With dead ends: 1302 [2018-12-02 20:41:18,519 INFO L226 Difference]: Without dead ends: 643 [2018-12-02 20:41:18,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 20:41:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-12-02 20:41:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-12-02 20:41:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-02 20:41:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-02 20:41:18,525 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-12-02 20:41:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:41:18,525 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-02 20:41:18,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 20:41:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-02 20:41:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-02 20:41:18,526 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:41:18,526 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:41:18,526 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:41:18,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:41:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-12-02 20:41:18,526 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 20:41:18,526 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 20:41:18,542 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 20:41:18,616 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 20:41:18,616 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 20:41:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:41:18,733 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 20:41:18,774 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 20:41:18,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:41:18 BasicIcfg [2018-12-02 20:41:18,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 20:41:18,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:41:18,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:41:18,775 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:41:18,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:41:13" (3/4) ... [2018-12-02 20:41:18,777 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 20:41:18,832 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f13047d3-23cd-4186-818e-e1f6fc022d4e/bin-2019/utaipan/witness.graphml [2018-12-02 20:41:18,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:41:18,832 INFO L168 Benchmark]: Toolchain (without parser) took 5692.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 939.3 MB in the beginning and 888.6 MB in the end (delta: 50.7 MB). Peak memory consumption was 264.1 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:18,833 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:41:18,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:18,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:41:18,834 INFO L168 Benchmark]: Boogie Preprocessor took 17.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:41:18,834 INFO L168 Benchmark]: RCFGBuilder took 195.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:18,834 INFO L168 Benchmark]: TraceAbstraction took 5074.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 896.2 MB in the end (delta: 186.2 MB). Peak memory consumption was 263.8 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:18,834 INFO L168 Benchmark]: Witness Printer took 56.97 ms. Allocated memory is still 1.2 GB. Free memory was 896.2 MB in the beginning and 888.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-12-02 20:41:18,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 195.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5074.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 896.2 MB in the end (delta: 186.2 MB). Peak memory consumption was 263.8 MB. Max. memory is 11.5 GB. * Witness Printer took 56.97 ms. Allocated memory is still 1.2 GB. Free memory was 896.2 MB in the beginning and 888.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 688]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L660] -1 int i = 3, j = 6; VAL [i=3, j=6] [L678] -1 pthread_t id1, id2; VAL [i=3, j=6] [L679] FCALL, FORK -1 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L662] 0 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L680] FCALL, FORK -1 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L670] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L682] -1 int condI = i >= (2*5 +6); [L685] -1 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L687] COND TRUE -1 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L688] -1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. UNSAFE Result, 5.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 516 SDtfs, 1504 SDslu, 2162 SDs, 0 SdLazy, 489 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 556 GetRequests, 455 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 374 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 109924 SizeOfPredicates, 64 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 16/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...