./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_3-container_of_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_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 5302a66f3e1b957c89e781f7f052efe6572f798a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 5302a66f3e1b957c89e781f7f052efe6572f798a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:43:34,139 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:43:34,140 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:43:34,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:43:34,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:43:34,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:43:34,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:43:34,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:43:34,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:43:34,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:43:34,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:43:34,150 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:43:34,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:43:34,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:43:34,151 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:43:34,151 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:43:34,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:43:34,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:43:34,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:43:34,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:43:34,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:43:34,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:43:34,156 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:43:34,156 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:43:34,156 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:43:34,157 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:43:34,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:43:34,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:43:34,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:43:34,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:43:34,158 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:43:34,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:43:34,159 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:43:34,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:43:34,159 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:43:34,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:43:34,160 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 09:43:34,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:43:34,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:43:34,167 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:43:34,167 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:43:34,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:43:34,167 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:43:34,167 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:43:34,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:43:34,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:43:34,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:43:34,169 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:43:34,170 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:43:34,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 09:43:34,170 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_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 -> 5302a66f3e1b957c89e781f7f052efe6572f798a [2018-12-09 09:43:34,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:43:34,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:43:34,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:43:34,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:43:34,201 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:43:34,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/../../sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:34,243 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/3c6df7543/f2b30d9a378341719fef6ddfccb432c7/FLAGc6e53e89d [2018-12-09 09:43:34,675 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:43:34,675 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:34,684 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/3c6df7543/f2b30d9a378341719fef6ddfccb432c7/FLAGc6e53e89d [2018-12-09 09:43:34,692 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/3c6df7543/f2b30d9a378341719fef6ddfccb432c7 [2018-12-09 09:43:34,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:43:34,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:43:34,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:43:34,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:43:34,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:43:34,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:43:34" (1/1) ... [2018-12-09 09:43:34,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2c39d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:34, skipping insertion in model container [2018-12-09 09:43:34,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:43:34" (1/1) ... [2018-12-09 09:43:34,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:43:34,731 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:43:35,116 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:43:35,172 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:43:35,215 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:43:35,350 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:43:35,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35 WrapperNode [2018-12-09 09:43:35,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:43:35,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:43:35,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:43:35,351 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:43:35,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:43:35,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:43:35,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:43:35,397 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:43:35,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... [2018-12-09 09:43:35,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:43:35,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:43:35,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:43:35,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:43:35,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:43:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:43:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 09:43:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 09:43:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 09:43:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:43:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:43:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2018-12-09 09:43:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2018-12-09 09:43:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 09:43:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 09:43:35,474 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:43:35,844 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:43:35,844 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 09:43:35,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:43:35 BoogieIcfgContainer [2018-12-09 09:43:35,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:43:35,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:43:35,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:43:35,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:43:35,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:43:34" (1/3) ... [2018-12-09 09:43:35,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4317d540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:43:35, skipping insertion in model container [2018-12-09 09:43:35,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:35" (2/3) ... [2018-12-09 09:43:35,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4317d540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:43:35, skipping insertion in model container [2018-12-09 09:43:35,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:43:35" (3/3) ... [2018-12-09 09:43:35,849 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,871 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,872 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,873 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,874 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,875 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,877 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,878 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,879 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,879 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,879 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,879 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,879 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,880 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,880 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,880 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:35,895 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:43:35,896 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:43:35,903 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 09:43:35,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 09:43:35,935 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:43:35,935 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:43:35,936 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:43:35,936 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:43:35,936 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:43:35,936 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:43:35,936 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:43:35,936 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:43:35,946 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146places, 154 transitions [2018-12-09 09:43:36,223 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 12658 states. [2018-12-09 09:43:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12658 states. [2018-12-09 09:43:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-09 09:43:36,232 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:36,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:36,234 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:36,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash -124987563, now seen corresponding path program 1 times [2018-12-09 09:43:36,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:43:36,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:36,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:36,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:36,296 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:43:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:36,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:36,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:43:36,478 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:43:36,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:43:36,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:43:36,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:43:36,492 INFO L87 Difference]: Start difference. First operand 12658 states. Second operand 6 states. [2018-12-09 09:43:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:37,003 INFO L93 Difference]: Finished difference Result 16553 states and 46657 transitions. [2018-12-09 09:43:37,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 09:43:37,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-12-09 09:43:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:37,059 INFO L225 Difference]: With dead ends: 16553 [2018-12-09 09:43:37,059 INFO L226 Difference]: Without dead ends: 14482 [2018-12-09 09:43:37,060 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-12-09 09:43:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14482 states. [2018-12-09 09:43:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14482 to 11906. [2018-12-09 09:43:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11906 states. [2018-12-09 09:43:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11906 states to 11906 states and 33521 transitions. [2018-12-09 09:43:37,364 INFO L78 Accepts]: Start accepts. Automaton has 11906 states and 33521 transitions. Word has length 43 [2018-12-09 09:43:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:37,365 INFO L480 AbstractCegarLoop]: Abstraction has 11906 states and 33521 transitions. [2018-12-09 09:43:37,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:43:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 11906 states and 33521 transitions. [2018-12-09 09:43:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-09 09:43:37,366 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:37,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:37,367 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:37,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1215746383, now seen corresponding path program 1 times [2018-12-09 09:43:37,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:43:37,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:37,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:37,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:37,376 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:43:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:37,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:37,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:43:37,466 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:43:37,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:43:37,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:43:37,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:43:37,468 INFO L87 Difference]: Start difference. First operand 11906 states and 33521 transitions. Second operand 6 states. [2018-12-09 09:43:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:37,872 INFO L93 Difference]: Finished difference Result 17604 states and 49533 transitions. [2018-12-09 09:43:37,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 09:43:37,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-12-09 09:43:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:37,906 INFO L225 Difference]: With dead ends: 17604 [2018-12-09 09:43:37,907 INFO L226 Difference]: Without dead ends: 17604 [2018-12-09 09:43:37,907 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-12-09 09:43:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17604 states. [2018-12-09 09:43:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17604 to 12744. [2018-12-09 09:43:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12744 states. [2018-12-09 09:43:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12744 states to 12744 states and 35855 transitions. [2018-12-09 09:43:38,083 INFO L78 Accepts]: Start accepts. Automaton has 12744 states and 35855 transitions. Word has length 43 [2018-12-09 09:43:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:38,083 INFO L480 AbstractCegarLoop]: Abstraction has 12744 states and 35855 transitions. [2018-12-09 09:43:38,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:43:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 12744 states and 35855 transitions. [2018-12-09 09:43:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 09:43:38,085 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:38,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:38,086 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:38,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1032075219, now seen corresponding path program 1 times [2018-12-09 09:43:38,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:43:38,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:38,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:38,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:38,095 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:43:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:38,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:38,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 09:43:38,246 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:43:38,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 09:43:38,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 09:43:38,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:43:38,247 INFO L87 Difference]: Start difference. First operand 12744 states and 35855 transitions. Second operand 8 states. [2018-12-09 09:43:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:38,878 INFO L93 Difference]: Finished difference Result 16000 states and 44665 transitions. [2018-12-09 09:43:38,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 09:43:38,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2018-12-09 09:43:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:38,898 INFO L225 Difference]: With dead ends: 16000 [2018-12-09 09:43:38,898 INFO L226 Difference]: Without dead ends: 14206 [2018-12-09 09:43:38,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-12-09 09:43:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14206 states. [2018-12-09 09:43:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 13884. [2018-12-09 09:43:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13884 states. [2018-12-09 09:43:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13884 states to 13884 states and 39043 transitions. [2018-12-09 09:43:39,053 INFO L78 Accepts]: Start accepts. Automaton has 13884 states and 39043 transitions. Word has length 49 [2018-12-09 09:43:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:39,054 INFO L480 AbstractCegarLoop]: Abstraction has 13884 states and 39043 transitions. [2018-12-09 09:43:39,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 09:43:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 13884 states and 39043 transitions. [2018-12-09 09:43:39,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 09:43:39,056 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:39,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:39,057 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:39,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash -542381444, now seen corresponding path program 1 times [2018-12-09 09:43:39,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:43:39,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:39,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:39,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:39,064 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:43:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:39,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:39,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 09:43:39,193 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:43:39,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 09:43:39,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 09:43:39,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:43:39,193 INFO L87 Difference]: Start difference. First operand 13884 states and 39043 transitions. Second operand 8 states. [2018-12-09 09:43:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:39,842 INFO L93 Difference]: Finished difference Result 22964 states and 64349 transitions. [2018-12-09 09:43:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 09:43:39,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2018-12-09 09:43:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:39,865 INFO L225 Difference]: With dead ends: 22964 [2018-12-09 09:43:39,865 INFO L226 Difference]: Without dead ends: 22964 [2018-12-09 09:43:39,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-12-09 09:43:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22964 states. [2018-12-09 09:43:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22964 to 16171. [2018-12-09 09:43:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16171 states. [2018-12-09 09:43:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 45615 transitions. [2018-12-09 09:43:40,107 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 45615 transitions. Word has length 49 [2018-12-09 09:43:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:40,107 INFO L480 AbstractCegarLoop]: Abstraction has 16171 states and 45615 transitions. [2018-12-09 09:43:40,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 09:43:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 45615 transitions. [2018-12-09 09:43:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-09 09:43:40,110 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:40,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:40,111 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:40,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1057507681, now seen corresponding path program 1 times [2018-12-09 09:43:40,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:43:40,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:40,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:40,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:43:40,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:43:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:43:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:43:40,175 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) 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) [2018-12-09 09:43:40,177 INFO L168 Benchmark]: Toolchain (without parser) took 5482.86 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 334.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 218.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,179 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:43:40,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 947.0 MB in the beginning and 984.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 1.1 GB. Free memory was 984.6 MB in the beginning and 981.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,180 INFO L168 Benchmark]: Boogie Preprocessor took 31.52 ms. Allocated memory is still 1.1 GB. Free memory was 981.9 MB in the beginning and 979.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,181 INFO L168 Benchmark]: RCFGBuilder took 415.66 ms. Allocated memory is still 1.1 GB. Free memory was 979.2 MB in the beginning and 929.3 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,181 INFO L168 Benchmark]: TraceAbstraction took 4331.75 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 221.2 MB). Free memory was 929.3 MB in the beginning and 1.1 GB in the end (delta: -133.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:40,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 655.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 947.0 MB in the beginning and 984.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 1.1 GB. Free memory was 984.6 MB in the beginning and 981.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.52 ms. Allocated memory is still 1.1 GB. Free memory was 981.9 MB in the beginning and 979.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 415.66 ms. Allocated memory is still 1.1 GB. Free memory was 979.2 MB in the beginning and 929.3 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4331.75 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 221.2 MB). Free memory was 929.3 MB in the beginning and 1.1 GB in the end (delta: -133.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:43:41,435 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:43:41,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:43:41,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:43:41,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:43:41,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:43:41,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:43:41,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:43:41,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:43:41,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:43:41,448 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:43:41,448 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:43:41,449 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:43:41,449 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:43:41,450 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:43:41,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:43:41,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:43:41,451 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:43:41,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:43:41,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:43:41,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:43:41,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:43:41,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:43:41,456 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:43:41,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:43:41,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:43:41,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:43:41,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:43:41,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:43:41,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:43:41,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:43:41,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:43:41,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:43:41,461 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:43:41,461 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:43:41,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:43:41,461 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 09:43:41,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:43:41,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:43:41,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:43:41,471 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:43:41,471 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:43:41,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:43:41,472 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:43:41,472 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:43:41,472 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:43:41,472 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:43:41,473 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:43:41,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:43:41,474 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:43:41,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:43:41,475 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:43:41,475 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 09:43:41,476 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:43:41,476 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 09:43:41,476 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 09:43:41,476 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_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 -> 5302a66f3e1b957c89e781f7f052efe6572f798a [2018-12-09 09:43:41,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:43:41,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:43:41,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:43:41,510 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:43:41,511 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:43:41,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/../../sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:41,549 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/55c028459/3d34d7c77f194b818c6e155e95c973fe/FLAGa39e51cf0 [2018-12-09 09:43:41,932 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:43:41,932 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/sv-benchmarks/c/ldv-races/race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:41,942 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/55c028459/3d34d7c77f194b818c6e155e95c973fe/FLAGa39e51cf0 [2018-12-09 09:43:42,280 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/bin-2019/utaipan/data/55c028459/3d34d7c77f194b818c6e155e95c973fe [2018-12-09 09:43:42,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:43:42,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:43:42,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:43:42,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:43:42,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:43:42,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:42,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3578b93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42, skipping insertion in model container [2018-12-09 09:43:42,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:42,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:43:42,335 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:43:42,739 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:43:42,747 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:43:42,833 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:43:42,982 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:43:42,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42 WrapperNode [2018-12-09 09:43:42,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:43:42,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:43:42,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:43:42,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:43:42,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:43:43,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:43:43,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:43:43,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:43:43,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... [2018-12-09 09:43:43,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:43:43,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:43:43,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:43:43,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:43:43,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:43:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2018-12-09 09:43:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2018-12-09 09:43:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 09:43:43,084 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:43:43,511 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:43:43,512 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 09:43:43,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:43:43 BoogieIcfgContainer [2018-12-09 09:43:43,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:43:43,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:43:43,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:43:43,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:43:43,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:43:42" (1/3) ... [2018-12-09 09:43:43,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e0357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:43:43, skipping insertion in model container [2018-12-09 09:43:43,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:43:42" (2/3) ... [2018-12-09 09:43:43,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e0357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:43:43, skipping insertion in model container [2018-12-09 09:43:43,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:43:43" (3/3) ... [2018-12-09 09:43:43,516 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of_false-unreach-call.i [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,538 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,539 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,540 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,541 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,542 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,543 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,544 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,545 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:43:43,566 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:43:43,566 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:43:43,571 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 09:43:43,580 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 09:43:43,594 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:43:43,595 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:43:43,595 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:43:43,595 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:43:43,595 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:43:43,595 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:43:43,595 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:43:43,595 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:43:43,595 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:43:43,602 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 143places, 151 transitions [2018-12-09 09:43:43,924 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 12430 states. [2018-12-09 09:43:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 12430 states. [2018-12-09 09:43:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 09:43:43,933 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:43,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:43,935 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:43,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:43,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2056417981, now seen corresponding path program 1 times [2018-12-09 09:43:43,943 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:43:43,943 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:43,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:44,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:43:44,299 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 09:43:44,302 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 09:43:44,303 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,307 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,320 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,321 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-09 09:43:44,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 09:43:44,358 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 09:43:44,359 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2018-12-09 09:43:44,359 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,373 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,393 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,393 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-09 09:43:44,428 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2018-12-09 09:43:44,432 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2018-12-09 09:43:44,433 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,436 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,440 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:44,440 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:5 [2018-12-09 09:43:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:44,492 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:43:44,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:44,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 09:43:44,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 09:43:44,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 09:43:44,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:43:44,508 INFO L87 Difference]: Start difference. First operand 12430 states. Second operand 8 states. [2018-12-09 09:43:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:45,974 INFO L93 Difference]: Finished difference Result 16325 states and 46009 transitions. [2018-12-09 09:43:45,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 09:43:45,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-12-09 09:43:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:46,024 INFO L225 Difference]: With dead ends: 16325 [2018-12-09 09:43:46,024 INFO L226 Difference]: Without dead ends: 14254 [2018-12-09 09:43:46,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-12-09 09:43:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14254 states. [2018-12-09 09:43:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14254 to 11678. [2018-12-09 09:43:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11678 states. [2018-12-09 09:43:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11678 states to 11678 states and 32873 transitions. [2018-12-09 09:43:46,271 INFO L78 Accepts]: Start accepts. Automaton has 11678 states and 32873 transitions. Word has length 40 [2018-12-09 09:43:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:46,271 INFO L480 AbstractCegarLoop]: Abstraction has 11678 states and 32873 transitions. [2018-12-09 09:43:46,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 09:43:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11678 states and 32873 transitions. [2018-12-09 09:43:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-09 09:43:46,273 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:46,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:46,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:46,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1377584212, now seen corresponding path program 1 times [2018-12-09 09:43:46,274 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:43:46,274 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:46,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:46,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:43:46,567 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 09:43:46,570 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 09:43:46,570 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,573 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,581 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-09 09:43:46,604 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 09:43:46,609 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 09:43:46,610 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2018-12-09 09:43:46,611 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,620 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,633 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,634 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-09 09:43:46,671 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-12-09 09:43:46,674 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2018-12-09 09:43:46,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,677 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,679 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:46,679 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2018-12-09 09:43:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:46,725 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:43:46,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:46,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 09:43:46,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 09:43:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 09:43:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-12-09 09:43:46,730 INFO L87 Difference]: Start difference. First operand 11678 states and 32873 transitions. Second operand 10 states. [2018-12-09 09:43:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:48,644 INFO L93 Difference]: Finished difference Result 17215 states and 48432 transitions. [2018-12-09 09:43:48,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 09:43:48,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-12-09 09:43:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:48,674 INFO L225 Difference]: With dead ends: 17215 [2018-12-09 09:43:48,674 INFO L226 Difference]: Without dead ends: 17215 [2018-12-09 09:43:48,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2018-12-09 09:43:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17215 states. [2018-12-09 09:43:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17215 to 12516. [2018-12-09 09:43:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12516 states. [2018-12-09 09:43:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12516 states to 12516 states and 35207 transitions. [2018-12-09 09:43:48,924 INFO L78 Accepts]: Start accepts. Automaton has 12516 states and 35207 transitions. Word has length 41 [2018-12-09 09:43:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:48,925 INFO L480 AbstractCegarLoop]: Abstraction has 12516 states and 35207 transitions. [2018-12-09 09:43:48,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 09:43:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12516 states and 35207 transitions. [2018-12-09 09:43:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 09:43:48,929 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:48,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:48,929 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:48,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash -891356043, now seen corresponding path program 1 times [2018-12-09 09:43:48,930 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:43:48,930 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:48,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:49,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:43:49,105 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 09:43:49,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 09:43:49,108 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,111 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,114 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-12-09 09:43:49,124 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-09 09:43:49,126 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-12-09 09:43:49,127 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,129 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:49,131 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2018-12-09 09:43:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:49,160 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:43:49,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:49,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:43:49,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:43:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:43:49,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:43:49,163 INFO L87 Difference]: Start difference. First operand 12516 states and 35207 transitions. Second operand 6 states. [2018-12-09 09:43:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:49,940 INFO L93 Difference]: Finished difference Result 15767 states and 44012 transitions. [2018-12-09 09:43:49,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 09:43:49,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-12-09 09:43:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:49,959 INFO L225 Difference]: With dead ends: 15767 [2018-12-09 09:43:49,960 INFO L226 Difference]: Without dead ends: 13979 [2018-12-09 09:43:49,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-09 09:43:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13979 states. [2018-12-09 09:43:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13979 to 13657. [2018-12-09 09:43:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13657 states. [2018-12-09 09:43:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 38396 transitions. [2018-12-09 09:43:50,110 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 38396 transitions. Word has length 46 [2018-12-09 09:43:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:50,111 INFO L480 AbstractCegarLoop]: Abstraction has 13657 states and 38396 transitions. [2018-12-09 09:43:50,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:43:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 38396 transitions. [2018-12-09 09:43:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-09 09:43:50,113 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:50,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:50,113 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:50,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash -345150056, now seen corresponding path program 1 times [2018-12-09 09:43:50,114 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:43:50,114 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:50,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:43:50,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:43:50,308 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 09:43:50,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 09:43:50,311 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,319 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,319 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-12-09 09:43:50,332 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-09 09:43:50,336 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-12-09 09:43:50,336 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,339 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:43:50,342 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2018-12-09 09:43:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:43:50,375 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:43:50,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:43:50,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:43:50,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:43:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:43:50,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:43:50,379 INFO L87 Difference]: Start difference. First operand 13657 states and 38396 transitions. Second operand 6 states. [2018-12-09 09:43:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:43:51,200 INFO L93 Difference]: Finished difference Result 22939 states and 64256 transitions. [2018-12-09 09:43:51,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 09:43:51,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-12-09 09:43:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:43:51,235 INFO L225 Difference]: With dead ends: 22939 [2018-12-09 09:43:51,235 INFO L226 Difference]: Without dead ends: 22939 [2018-12-09 09:43:51,235 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-12-09 09:43:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22939 states. [2018-12-09 09:43:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22939 to 15944. [2018-12-09 09:43:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15944 states. [2018-12-09 09:43:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15944 states to 15944 states and 44968 transitions. [2018-12-09 09:43:51,464 INFO L78 Accepts]: Start accepts. Automaton has 15944 states and 44968 transitions. Word has length 47 [2018-12-09 09:43:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:43:51,465 INFO L480 AbstractCegarLoop]: Abstraction has 15944 states and 44968 transitions. [2018-12-09 09:43:51,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:43:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 15944 states and 44968 transitions. [2018-12-09 09:43:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 09:43:51,467 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:43:51,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:43:51,467 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:43:51,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:43:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash 171676906, now seen corresponding path program 1 times [2018-12-09 09:43:51,468 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:43:51,468 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f7e1956-ba7b-464f-b482-c5d3a911f388/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 [2018-12-09 09:43:51,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:43:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:43:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:43:52,215 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:43:52,217 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) 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) [2018-12-09 09:43:52,221 INFO L168 Benchmark]: Toolchain (without parser) took 9936.71 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 329.3 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -110.0 MB). Peak memory consumption was 219.3 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:52,223 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-09 09:43:52,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 938.0 MB in the beginning and 996.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:52,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 1.2 GB. Free memory is still 996.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:43:52,224 INFO L168 Benchmark]: Boogie Preprocessor took 28.40 ms. Allocated memory is still 1.2 GB. Free memory was 996.6 MB in the beginning and 990.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:52,225 INFO L168 Benchmark]: RCFGBuilder took 461.73 ms. Allocated memory is still 1.2 GB. Free memory was 990.0 MB in the beginning and 945.6 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:52,225 INFO L168 Benchmark]: TraceAbstraction took 8707.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.4 MB). Free memory was 945.6 MB in the beginning and 1.0 GB in the end (delta: -102.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:43:52,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 697.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 938.0 MB in the beginning and 996.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 1.2 GB. Free memory is still 996.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.40 ms. Allocated memory is still 1.2 GB. Free memory was 996.6 MB in the beginning and 990.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 461.73 ms. Allocated memory is still 1.2 GB. Free memory was 990.0 MB in the beginning and 945.6 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8707.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.4 MB). Free memory was 945.6 MB in the beginning and 1.0 GB in the end (delta: -102.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...