./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer_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_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 88d184f750ae7f3761c058885cf1dc5c9c85a913 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 88d184f750ae7f3761c058885cf1dc5c9c85a913 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:50:08,379 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:50:08,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:50:08,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:50:08,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:50:08,386 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:50:08,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:50:08,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:50:08,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:50:08,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:50:08,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:50:08,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:50:08,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:50:08,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:50:08,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:50:08,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:50:08,392 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:50:08,393 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:50:08,394 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:50:08,395 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:50:08,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:50:08,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:50:08,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:50:08,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:50:08,397 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:50:08,398 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:50:08,398 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:50:08,399 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:50:08,399 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:50:08,400 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:50:08,400 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:50:08,400 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:50:08,400 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:50:08,400 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:50:08,401 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:50:08,401 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:50:08,401 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 16:50:08,408 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:50:08,408 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:50:08,409 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:50:08,409 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:50:08,409 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:50:08,409 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:50:08,409 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:50:08,409 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:50:08,409 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:50:08,410 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:50:08,410 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:50:08,410 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:50:08,410 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:50:08,410 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:50:08,410 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:50:08,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:50:08,412 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:50:08,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:50:08,412 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:50:08,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:50:08,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:50:08,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:50:08,413 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_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 -> 88d184f750ae7f3761c058885cf1dc5c9c85a913 [2018-12-09 16:50:08,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:50:08,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:50:08,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:50:08,440 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:50:08,440 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:50:08,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i [2018-12-09 16:50:08,479 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/bc4cdf90f/b238f8ac64d7436697dd85d973ee0a43/FLAG4e82ce9a8 [2018-12-09 16:50:08,912 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:50:08,912 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i [2018-12-09 16:50:08,923 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/bc4cdf90f/b238f8ac64d7436697dd85d973ee0a43/FLAG4e82ce9a8 [2018-12-09 16:50:08,934 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/bc4cdf90f/b238f8ac64d7436697dd85d973ee0a43 [2018-12-09 16:50:08,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:50:08,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:50:08,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:50:08,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:50:08,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:50:08,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:08" (1/1) ... [2018-12-09 16:50:08,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115e7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:08, skipping insertion in model container [2018-12-09 16:50:08,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:08" (1/1) ... [2018-12-09 16:50:08,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:50:08,972 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:50:09,213 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:50:09,237 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:50:09,262 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:50:09,334 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:50:09,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09 WrapperNode [2018-12-09 16:50:09,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:50:09,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:50:09,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:50:09,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:50:09,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:50:09,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:50:09,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:50:09,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:50:09,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... [2018-12-09 16:50:09,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:50:09,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:50:09,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:50:09,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:50:09,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 16:50:09,443 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 16:50:09,443 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:50:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 16:50:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 16:50:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 16:50:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 16:50:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:50:09,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:50:09,445 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 16:50:09,977 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:50:09,978 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 16:50:09,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:09 BoogieIcfgContainer [2018-12-09 16:50:09,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:50:09,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:50:09,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:50:09,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:50:09,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:50:08" (1/3) ... [2018-12-09 16:50:09,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede889a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:09, skipping insertion in model container [2018-12-09 16:50:09,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:09" (2/3) ... [2018-12-09 16:50:09,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede889a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:09, skipping insertion in model container [2018-12-09 16:50:09,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:09" (3/3) ... [2018-12-09 16:50:09,984 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer_false-unreach-call.i [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,015 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,016 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,017 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,018 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,019 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,020 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,020 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,020 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,020 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,020 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,021 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,022 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,023 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,024 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,024 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,024 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,024 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,024 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,025 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,025 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,025 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,025 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,025 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,026 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,027 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,028 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,029 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,030 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,031 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,032 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,033 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,034 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,035 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,035 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,035 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:10,044 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 16:50:10,044 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:50:10,050 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 16:50:10,059 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 16:50:10,075 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:50:10,075 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:50:10,075 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:50:10,075 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:50:10,075 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:50:10,075 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:50:10,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:50:10,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:50:10,086 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 530places, 538 transitions [2018-12-09 16:50:10,171 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6905 states. [2018-12-09 16:50:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states. [2018-12-09 16:50:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-12-09 16:50:10,198 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:10,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:10,200 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:10,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -541831717, now seen corresponding path program 1 times [2018-12-09 16:50:10,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:50:10,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:10,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:10,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:10,242 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:50:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:10,654 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 16:50:10,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:10,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:50:10,656 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:50:10,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:50:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:50:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:10,669 INFO L87 Difference]: Start difference. First operand 6905 states. Second operand 3 states. [2018-12-09 16:50:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:10,755 INFO L93 Difference]: Finished difference Result 10253 states and 26752 transitions. [2018-12-09 16:50:10,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:50:10,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 445 [2018-12-09 16:50:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:10,790 INFO L225 Difference]: With dead ends: 10253 [2018-12-09 16:50:10,790 INFO L226 Difference]: Without dead ends: 10145 [2018-12-09 16:50:10,791 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2018-12-09 16:50:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 8675. [2018-12-09 16:50:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8675 states. [2018-12-09 16:50:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8675 states to 8675 states and 22733 transitions. [2018-12-09 16:50:10,971 INFO L78 Accepts]: Start accepts. Automaton has 8675 states and 22733 transitions. Word has length 445 [2018-12-09 16:50:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:10,972 INFO L480 AbstractCegarLoop]: Abstraction has 8675 states and 22733 transitions. [2018-12-09 16:50:10,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:50:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8675 states and 22733 transitions. [2018-12-09 16:50:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-12-09 16:50:10,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:10,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:10,979 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:10,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash 552502460, now seen corresponding path program 1 times [2018-12-09 16:50:10,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:50:10,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:10,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:10,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:10,981 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:50:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:11,147 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 16:50:11,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:11,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:50:11,148 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:50:11,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:50:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:50:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:11,150 INFO L87 Difference]: Start difference. First operand 8675 states and 22733 transitions. Second operand 3 states. [2018-12-09 16:50:11,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:11,205 INFO L93 Difference]: Finished difference Result 8096 states and 20868 transitions. [2018-12-09 16:50:11,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:50:11,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 449 [2018-12-09 16:50:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:11,225 INFO L225 Difference]: With dead ends: 8096 [2018-12-09 16:50:11,226 INFO L226 Difference]: Without dead ends: 7955 [2018-12-09 16:50:11,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7955 states. [2018-12-09 16:50:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7955 to 7727. [2018-12-09 16:50:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7727 states. [2018-12-09 16:50:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 20007 transitions. [2018-12-09 16:50:11,329 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 20007 transitions. Word has length 449 [2018-12-09 16:50:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:11,330 INFO L480 AbstractCegarLoop]: Abstraction has 7727 states and 20007 transitions. [2018-12-09 16:50:11,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:50:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 20007 transitions. [2018-12-09 16:50:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-12-09 16:50:11,335 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:11,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:11,335 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:11,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:11,335 INFO L82 PathProgramCache]: Analyzing trace with hash 701299006, now seen corresponding path program 1 times [2018-12-09 16:50:11,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:50:11,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:11,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:11,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:11,338 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:50:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:11,466 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 16:50:11,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:11,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:50:11,467 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:50:11,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:50:11,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:50:11,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:50:11,468 INFO L87 Difference]: Start difference. First operand 7727 states and 20007 transitions. Second operand 4 states. [2018-12-09 16:50:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:11,522 INFO L93 Difference]: Finished difference Result 10592 states and 27610 transitions. [2018-12-09 16:50:11,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:50:11,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-12-09 16:50:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:11,544 INFO L225 Difference]: With dead ends: 10592 [2018-12-09 16:50:11,544 INFO L226 Difference]: Without dead ends: 10592 [2018-12-09 16:50:11,544 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 16:50:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-12-09 16:50:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 8051. [2018-12-09 16:50:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8051 states. [2018-12-09 16:50:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8051 states to 8051 states and 20874 transitions. [2018-12-09 16:50:11,654 INFO L78 Accepts]: Start accepts. Automaton has 8051 states and 20874 transitions. Word has length 454 [2018-12-09 16:50:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:11,655 INFO L480 AbstractCegarLoop]: Abstraction has 8051 states and 20874 transitions. [2018-12-09 16:50:11,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:50:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8051 states and 20874 transitions. [2018-12-09 16:50:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-12-09 16:50:11,660 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:11,660 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:11,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:11,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:11,661 INFO L82 PathProgramCache]: Analyzing trace with hash -84982702, now seen corresponding path program 1 times [2018-12-09 16:50:11,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:50:11,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:11,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:11,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:50:11,663 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:50:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:11,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:50:11,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:50:11,921 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-09 16:50:11,923 INFO L168 Benchmark]: Toolchain (without parser) took 2987.19 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 369.6 MB). Free memory was 947.0 MB in the beginning and 1.2 GB in the end (delta: -291.8 MB). Peak memory consumption was 508.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,924 INFO L168 Benchmark]: CDTParser took 0.12 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 16:50:11,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -120.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,925 INFO L168 Benchmark]: Boogie Preprocessor took 28.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,925 INFO L168 Benchmark]: RCFGBuilder took 569.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 99.8 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,926 INFO L168 Benchmark]: TraceAbstraction took 1943.77 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 253.8 MB). Free memory was 956.5 MB in the beginning and 1.2 GB in the end (delta: -282.4 MB). Peak memory consumption was 402.2 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:11,928 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 397.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -120.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 569.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 99.8 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1943.77 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 253.8 MB). Free memory was 956.5 MB in the beginning and 1.2 GB in the end (delta: -282.4 MB). Peak memory consumption was 402.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:50:13,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:50:13,332 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:50:13,338 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:50:13,338 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:50:13,338 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:50:13,339 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:50:13,340 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:50:13,341 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:50:13,341 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:50:13,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:50:13,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:50:13,342 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:50:13,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:50:13,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:50:13,343 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:50:13,344 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:50:13,344 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:50:13,345 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:50:13,346 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:50:13,347 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:50:13,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:50:13,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:50:13,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:50:13,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:50:13,349 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:50:13,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:50:13,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:50:13,350 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:50:13,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:50:13,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:50:13,351 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:50:13,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:50:13,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:50:13,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:50:13,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:50:13,352 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 16:50:13,359 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:50:13,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:50:13,360 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:50:13,360 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:50:13,360 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:50:13,361 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 16:50:13,361 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:50:13,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:50:13,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:50:13,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:50:13,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:50:13,363 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 16:50:13,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:50:13,363 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 16:50:13,363 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 16:50:13,363 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_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 -> 88d184f750ae7f3761c058885cf1dc5c9c85a913 [2018-12-09 16:50:13,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:50:13,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:50:13,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:50:13,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:50:13,392 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:50:13,393 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i [2018-12-09 16:50:13,430 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/2bc6628a9/5a8a244de104434e9448267be11a26ab/FLAG0abab9ecc [2018-12-09 16:50:13,877 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:50:13,878 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/sv-benchmarks/c/pthread/stack_longer_false-unreach-call.i [2018-12-09 16:50:13,885 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/2bc6628a9/5a8a244de104434e9448267be11a26ab/FLAG0abab9ecc [2018-12-09 16:50:13,893 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/data/2bc6628a9/5a8a244de104434e9448267be11a26ab [2018-12-09 16:50:13,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:50:13,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:50:13,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:50:13,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:50:13,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:50:13,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:13" (1/1) ... [2018-12-09 16:50:13,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7834880b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:13, skipping insertion in model container [2018-12-09 16:50:13,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:13" (1/1) ... [2018-12-09 16:50:13,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:50:13,927 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:50:14,154 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:50:14,184 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:50:14,256 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:50:14,328 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:50:14,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14 WrapperNode [2018-12-09 16:50:14,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:50:14,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:50:14,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:50:14,329 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:50:14,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:50:14,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:50:14,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:50:14,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:50:14,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... [2018-12-09 16:50:14,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:50:14,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:50:14,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:50:14,380 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:50:14,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 16:50:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 16:50:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 16:50:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:50:14,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:50:14,414 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 16:50:14,676 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:50:14,677 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 16:50:14,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:14 BoogieIcfgContainer [2018-12-09 16:50:14,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:50:14,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:50:14,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:50:14,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:50:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:50:13" (1/3) ... [2018-12-09 16:50:14,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e4a535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:14, skipping insertion in model container [2018-12-09 16:50:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:14" (2/3) ... [2018-12-09 16:50:14,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e4a535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:14, skipping insertion in model container [2018-12-09 16:50:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:14" (3/3) ... [2018-12-09 16:50:14,681 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer_false-unreach-call.i [2018-12-09 16:50:14,704 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,705 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,706 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,707 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,708 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,709 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,710 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,711 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,712 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,713 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,714 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,715 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,716 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,717 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,718 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,718 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,718 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,718 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,718 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:50:14,727 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 16:50:14,727 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:50:14,732 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 16:50:14,741 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 16:50:14,756 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 16:50:14,756 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:50:14,756 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:50:14,756 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:50:14,756 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:50:14,756 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:50:14,756 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:50:14,757 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:50:14,757 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:50:14,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 126places, 134 transitions [2018-12-09 16:50:14,881 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5831 states. [2018-12-09 16:50:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states. [2018-12-09 16:50:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 16:50:14,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:14,897 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] [2018-12-09 16:50:14,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:14,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1875729070, now seen corresponding path program 1 times [2018-12-09 16:50:14,905 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:14,906 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:14,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:14,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:14,992 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 16:50:14,992 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:14,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:14,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:50:14,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:50:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:50:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:15,007 INFO L87 Difference]: Start difference. First operand 5831 states. Second operand 3 states. [2018-12-09 16:50:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:15,090 INFO L93 Difference]: Finished difference Result 8894 states and 23788 transitions. [2018-12-09 16:50:15,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:50:15,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-12-09 16:50:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:15,126 INFO L225 Difference]: With dead ends: 8894 [2018-12-09 16:50:15,126 INFO L226 Difference]: Without dead ends: 8786 [2018-12-09 16:50:15,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2018-12-09 16:50:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 7505. [2018-12-09 16:50:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7505 states. [2018-12-09 16:50:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 20265 transitions. [2018-12-09 16:50:15,310 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 20265 transitions. Word has length 45 [2018-12-09 16:50:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:15,310 INFO L480 AbstractCegarLoop]: Abstraction has 7505 states and 20265 transitions. [2018-12-09 16:50:15,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:50:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 20265 transitions. [2018-12-09 16:50:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 16:50:15,314 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:15,314 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] [2018-12-09 16:50:15,314 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:15,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1217283586, now seen corresponding path program 1 times [2018-12-09 16:50:15,315 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:15,315 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:15,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:15,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:15,381 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 16:50:15,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:15,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:15,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:50:15,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:50:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:50:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:15,384 INFO L87 Difference]: Start difference. First operand 7505 states and 20265 transitions. Second operand 3 states. [2018-12-09 16:50:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:15,445 INFO L93 Difference]: Finished difference Result 7610 states and 20262 transitions. [2018-12-09 16:50:15,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:50:15,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-12-09 16:50:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:15,462 INFO L225 Difference]: With dead ends: 7610 [2018-12-09 16:50:15,462 INFO L226 Difference]: Without dead ends: 7469 [2018-12-09 16:50:15,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2018-12-09 16:50:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7049. [2018-12-09 16:50:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2018-12-09 16:50:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 18921 transitions. [2018-12-09 16:50:15,590 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 18921 transitions. Word has length 48 [2018-12-09 16:50:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:15,591 INFO L480 AbstractCegarLoop]: Abstraction has 7049 states and 18921 transitions. [2018-12-09 16:50:15,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:50:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 18921 transitions. [2018-12-09 16:50:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 16:50:15,593 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:15,593 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, 1, 1] [2018-12-09 16:50:15,593 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:15,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash -89099366, now seen corresponding path program 1 times [2018-12-09 16:50:15,594 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:15,594 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:15,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:15,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:15,660 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 16:50:15,660 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:15,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:15,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:50:15,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:50:15,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:50:15,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:50:15,661 INFO L87 Difference]: Start difference. First operand 7049 states and 18921 transitions. Second operand 4 states. [2018-12-09 16:50:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:15,743 INFO L93 Difference]: Finished difference Result 10046 states and 26925 transitions. [2018-12-09 16:50:15,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:50:15,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-12-09 16:50:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:15,764 INFO L225 Difference]: With dead ends: 10046 [2018-12-09 16:50:15,764 INFO L226 Difference]: Without dead ends: 10046 [2018-12-09 16:50:15,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 16:50:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2018-12-09 16:50:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 7331. [2018-12-09 16:50:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7331 states. [2018-12-09 16:50:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7331 states to 7331 states and 19689 transitions. [2018-12-09 16:50:15,871 INFO L78 Accepts]: Start accepts. Automaton has 7331 states and 19689 transitions. Word has length 53 [2018-12-09 16:50:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:15,871 INFO L480 AbstractCegarLoop]: Abstraction has 7331 states and 19689 transitions. [2018-12-09 16:50:15,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:50:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7331 states and 19689 transitions. [2018-12-09 16:50:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-12-09 16:50:15,875 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:15,875 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:15,876 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:15,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash 689452142, now seen corresponding path program 1 times [2018-12-09 16:50:15,876 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:15,876 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/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 16:50:15,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:15,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:15,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:50:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:15,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:50:15,988 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:50:15,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:16,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:16,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:50:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:16,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 16:50:16,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2018-12-09 16:50:16,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 16:50:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 16:50:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-09 16:50:16,070 INFO L87 Difference]: Start difference. First operand 7331 states and 19689 transitions. Second operand 8 states. [2018-12-09 16:50:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:16,287 INFO L93 Difference]: Finished difference Result 22577 states and 60749 transitions. [2018-12-09 16:50:16,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 16:50:16,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2018-12-09 16:50:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:16,319 INFO L225 Difference]: With dead ends: 22577 [2018-12-09 16:50:16,319 INFO L226 Difference]: Without dead ends: 22577 [2018-12-09 16:50:16,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-09 16:50:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22577 states. [2018-12-09 16:50:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22577 to 18215. [2018-12-09 16:50:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18215 states. [2018-12-09 16:50:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18215 states to 18215 states and 49684 transitions. [2018-12-09 16:50:16,624 INFO L78 Accepts]: Start accepts. Automaton has 18215 states and 49684 transitions. Word has length 75 [2018-12-09 16:50:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:16,624 INFO L480 AbstractCegarLoop]: Abstraction has 18215 states and 49684 transitions. [2018-12-09 16:50:16,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 16:50:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18215 states and 49684 transitions. [2018-12-09 16:50:16,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-09 16:50:16,629 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:16,629 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, 1, 1, 1, 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 16:50:16,629 INFO L423 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:16,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1292791580, now seen corresponding path program 1 times [2018-12-09 16:50:16,630 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:16,630 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 16:50:16,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:16,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:16,740 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 16:50:16,740 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:16,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:16,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 16:50:16,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 16:50:16,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 16:50:16,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:50:16,743 INFO L87 Difference]: Start difference. First operand 18215 states and 49684 transitions. Second operand 7 states. [2018-12-09 16:50:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:16,911 INFO L93 Difference]: Finished difference Result 21092 states and 57259 transitions. [2018-12-09 16:50:16,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 16:50:16,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2018-12-09 16:50:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:16,937 INFO L225 Difference]: With dead ends: 21092 [2018-12-09 16:50:16,937 INFO L226 Difference]: Without dead ends: 21092 [2018-12-09 16:50:16,937 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-12-09 16:50:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2018-12-09 16:50:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 18962. [2018-12-09 16:50:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18962 states. [2018-12-09 16:50:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18962 states to 18962 states and 51559 transitions. [2018-12-09 16:50:17,138 INFO L78 Accepts]: Start accepts. Automaton has 18962 states and 51559 transitions. Word has length 78 [2018-12-09 16:50:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:17,139 INFO L480 AbstractCegarLoop]: Abstraction has 18962 states and 51559 transitions. [2018-12-09 16:50:17,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 16:50:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18962 states and 51559 transitions. [2018-12-09 16:50:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-09 16:50:17,143 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:17,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:17,144 INFO L423 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:17,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash -875496614, now seen corresponding path program 1 times [2018-12-09 16:50:17,144 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:17,144 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 16:50:17,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:17,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:17,249 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 11 treesize of output 8 [2018-12-09 16:50:17,251 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 8 treesize of output 7 [2018-12-09 16:50:17,251 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,253 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,254 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,255 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-12-09 16:50:17,263 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 16:50:17,263 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:17,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:17,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:50:17,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:50:17,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:50:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:17,266 INFO L87 Difference]: Start difference. First operand 18962 states and 51559 transitions. Second operand 3 states. [2018-12-09 16:50:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:17,298 INFO L93 Difference]: Finished difference Result 9161 states and 23576 transitions. [2018-12-09 16:50:17,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:50:17,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2018-12-09 16:50:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:17,306 INFO L225 Difference]: With dead ends: 9161 [2018-12-09 16:50:17,306 INFO L226 Difference]: Without dead ends: 9161 [2018-12-09 16:50:17,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:50:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2018-12-09 16:50:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 7520. [2018-12-09 16:50:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2018-12-09 16:50:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 19216 transitions. [2018-12-09 16:50:17,378 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 19216 transitions. Word has length 87 [2018-12-09 16:50:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:17,378 INFO L480 AbstractCegarLoop]: Abstraction has 7520 states and 19216 transitions. [2018-12-09 16:50:17,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:50:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 19216 transitions. [2018-12-09 16:50:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-09 16:50:17,381 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:17,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:17,381 INFO L423 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:17,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1317459886, now seen corresponding path program 1 times [2018-12-09 16:50:17,382 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:17,382 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 16:50:17,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:17,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:17,621 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 15 treesize of output 12 [2018-12-09 16:50:17,623 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 12 treesize of output 11 [2018-12-09 16:50:17,623 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,626 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,635 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 16:50:17,635 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 16:50:17,971 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 15 treesize of output 11 [2018-12-09 16:50:17,973 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 11 treesize of output 3 [2018-12-09 16:50:17,973 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,975 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:50:17,977 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 16:50:17,977 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 16:50:18,084 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 16:50:18,084 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:50:18,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:50:18,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-12-09 16:50:18,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 16:50:18,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 16:50:18,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-12-09 16:50:18,087 INFO L87 Difference]: Start difference. First operand 7520 states and 19216 transitions. Second operand 22 states. [2018-12-09 16:50:22,683 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 16:50:23,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:23,485 INFO L93 Difference]: Finished difference Result 16703 states and 42637 transitions. [2018-12-09 16:50:23,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-09 16:50:23,485 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 88 [2018-12-09 16:50:23,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:23,498 INFO L225 Difference]: With dead ends: 16703 [2018-12-09 16:50:23,498 INFO L226 Difference]: Without dead ends: 16703 [2018-12-09 16:50:23,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=442, Invalid=2314, Unknown=0, NotChecked=0, Total=2756 [2018-12-09 16:50:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16703 states. [2018-12-09 16:50:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16703 to 9317. [2018-12-09 16:50:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9317 states. [2018-12-09 16:50:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9317 states to 9317 states and 24008 transitions. [2018-12-09 16:50:23,634 INFO L78 Accepts]: Start accepts. Automaton has 9317 states and 24008 transitions. Word has length 88 [2018-12-09 16:50:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:23,634 INFO L480 AbstractCegarLoop]: Abstraction has 9317 states and 24008 transitions. [2018-12-09 16:50:23,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 16:50:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9317 states and 24008 transitions. [2018-12-09 16:50:23,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-12-09 16:50:23,638 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:23,639 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:23,639 INFO L423 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:23,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:23,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1288430236, now seen corresponding path program 1 times [2018-12-09 16:50:23,639 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:23,639 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 16:50:23,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:23,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:23,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:50:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:23,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:50:23,807 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:50:23,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:50:23,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:50:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:23,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:50:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:50:23,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 16:50:23,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2018-12-09 16:50:23,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 16:50:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 16:50:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-12-09 16:50:23,884 INFO L87 Difference]: Start difference. First operand 9317 states and 24008 transitions. Second operand 16 states. [2018-12-09 16:50:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:50:24,285 INFO L93 Difference]: Finished difference Result 16151 states and 41008 transitions. [2018-12-09 16:50:24,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-09 16:50:24,286 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2018-12-09 16:50:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:50:24,298 INFO L225 Difference]: With dead ends: 16151 [2018-12-09 16:50:24,298 INFO L226 Difference]: Without dead ends: 16151 [2018-12-09 16:50:24,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 16:50:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2018-12-09 16:50:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 11972. [2018-12-09 16:50:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11972 states. [2018-12-09 16:50:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11972 states to 11972 states and 30985 transitions. [2018-12-09 16:50:24,415 INFO L78 Accepts]: Start accepts. Automaton has 11972 states and 30985 transitions. Word has length 109 [2018-12-09 16:50:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:50:24,415 INFO L480 AbstractCegarLoop]: Abstraction has 11972 states and 30985 transitions. [2018-12-09 16:50:24,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 16:50:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11972 states and 30985 transitions. [2018-12-09 16:50:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-09 16:50:24,420 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:50:24,421 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:24,421 INFO L423 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:50:24,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:50:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash 185506686, now seen corresponding path program 1 times [2018-12-09 16:50:24,421 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:50:24,421 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 16:50:24,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:50:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:50:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:50:24,854 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:50:24,932 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 16:50:24,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:50:24 BasicIcfg [2018-12-09 16:50:24,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:50:24,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:50:24,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:50:24,933 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:50:24,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:14" (3/4) ... [2018-12-09 16:50:24,936 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 16:50:24,995 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ddc7f37a-3a0b-4625-a8a6-5c7c5c19cbdb/bin-2019/utaipan/witness.graphml [2018-12-09 16:50:24,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:50:24,996 INFO L168 Benchmark]: Toolchain (without parser) took 11100.67 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 531.6 MB). Free memory was 939.3 MB in the beginning and 840.6 MB in the end (delta: 98.8 MB). Peak memory consumption was 630.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:24,997 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 16:50:24,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -115.3 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:24,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:50:24,997 INFO L168 Benchmark]: Boogie Preprocessor took 19.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:50:24,997 INFO L168 Benchmark]: RCFGBuilder took 297.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:24,998 INFO L168 Benchmark]: TraceAbstraction took 10255.38 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 421.5 MB). Free memory was 1.0 GB in the beginning and 867.7 MB in the end (delta: 140.8 MB). Peak memory consumption was 562.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:24,998 INFO L168 Benchmark]: Witness Printer took 62.21 ms. Allocated memory is still 1.6 GB. Free memory was 867.7 MB in the beginning and 840.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:50:25,000 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 431.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -115.3 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 297.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10255.38 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 421.5 MB). Free memory was 1.0 GB in the beginning and 867.7 MB in the end (delta: 140.8 MB). Peak memory consumption was 562.4 MB. Max. memory is 11.5 GB. * Witness Printer took 62.21 ms. Allocated memory is still 1.6 GB. Free memory was 867.7 MB in the beginning and 840.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 919]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L914] -1 static int top=0; VAL [top=0] [L915] -1 static unsigned int arr[(400)]; VAL [arr={11:0}, top=0] [L916] -1 pthread_mutex_t m; VAL [arr={11:0}, m={2:0}, top=0] [L917] -1 _Bool flag=(0); VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L998] -1 pthread_t id1, id2; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L1000] FCALL, FORK -1 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L1001] FCALL, FORK -1 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L983] 0 int i; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L984] 0 i=0 VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L967] 1 int i; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L984] COND TRUE 0 i<(400) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L968] 1 unsigned int tmp; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L969] 1 i=0 VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L969] COND TRUE 1 i<(400) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L972] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L939] COND FALSE 1 !(top==(400)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L931] 1 return top; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L946] 1 stack[get_top()] = x VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L923] 1 top++ VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L949] 1 return 0; VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L974] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L976] 1 flag=(1) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L987] COND TRUE 0 \read(flag) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L931] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L953] COND FALSE 0 !(get_top()==0) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L927] 0 top-- VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L931] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L961] EXPR 0 stack[get_top()] VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L961] 0 return stack[get_top()]; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L989] COND FALSE 0 !(!(pop(arr)!=(-2))) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L984] 0 i++ VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L984] COND TRUE 0 i<(400) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L987] COND TRUE 0 \read(flag) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L931] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L953] COND TRUE 0 get_top()==0 VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L956] 0 return (-2); VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L989] COND TRUE 0 !(pop(arr)!=(-2)) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L919] 0 __VERIFIER_error() VAL [arr={11:0}, flag=1, m={2:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 4 error locations. UNSAFE Result, 10.1s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 6.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1901 SDtfs, 3349 SDslu, 11782 SDs, 0 SdLazy, 2349 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1185 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18962occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 24114 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 877 NumberOfCodeBlocks, 877 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1121 ConstructedInterpolants, 0 QuantifiedInterpolants, 403380 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1235 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 8/164 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...